5. On our honeymoon, sara was glowing. Years later, she still is. Night and easy color looks lit by the sun. Fighting constipation by eating healthier, drinking plenty of water but not getting relief. Try dulcolax tablets. Predic good evening. Im rebecca jarvis. And tonight, were investigating a grisly murder committed in broad daylight at a college community. Just as shocking the location, the victim, a professor and family man. And now, his friends and former students remember this beloved teacher. Who killed him . And what was the motive . Abcs matt gutman has the mysterious clues. Okay. Whats going on with him . I dont know. The drivers side window is all bashed in. And hes got blood all over his head. Reporter a 911 call, punctuating the morning calls. A vivid description of Florida State law professor, dan markle, in his car, dying. I dont know if someone tried to shoot him or he shot himself. I dont know. Reporter this is isnt the domain of gunshot victims, but College Professors and family men, like markle. Who dropped his sons off at day care. In his garage, left for dead, until his neighbor found him, checking on the curiously open garage door. I heard about breakins in the area. And then, i saw the window shattered. Reporter but markle wasnt robbed. The police said the assailant waited for him and killed him in his garage. Hes still moving around. Hes alive. Reporter markle would die 14 hours later at tallahassee memorial hospital, just a few minutes drive from the house. The sandyhaired scholar with an ivy league pedigree, leaving behind his sons, 2 and 5. And a deepening mystery, rattling this tightknit community. I cannot imagine a person wanting to hurt him. I dont think any of his friends can. Hes unforgettable. Very unique personality. Reporter the big questions, what happened to the conscientious professor and father of two . And who would want to kill him . We do believe that this was not a random act, where he just surprised somebody. What we do believe is that mr. Markle was the intended victim. Reporter in other words, murder. The investigation begins with in a 911 call. 12, long minutes describing the gruesome scene, from a 72yearold neighbor. And i came back over. And his drivers side window was shattered. And hes spattered and cant answer. Reporter and that first clue. Another neighbor telling police about a silver prius speeding away. No one saw the person come or go. Maybe they saw the car. Is this professional . Is this a crime of passion . What do you think . It can be a professional or someone that just wanted him dead that isnt a professional. We cant tell. Anybody could have gotten that access and committed this offense without being noticed by anyone. Reporter but it was noticed by someone, markle himself. Multiple sources tell abc news, markle was on the phone when he arrived home, remarking to the person on the phone that, there was someone in his driveway. He did not sound threatened. We do believe this was not a random act, where he just surprised somebody. We believe that mr. Markle was the intended victim. Its imperative for police to question the ear witness as much as possible. That person listened to this deceased professor moments before he perished. So, every detail could become relevant. Reporter minutes later, that silver prius seen speeding from the scene. A vehicle of interest. But what about a person . Harvard and cambridgeeducated, markle had a controversial blog. Could this be clue number two . He posted a blog about the death penalty. The same website on which he received threatening comments in 2012. One commenter saying that, markle needed to be stopped by all means necessary. Is it possible that some of his scholarship and literature created some enemies . Thats as possible as any of the other scenarios. Reporter and there are several. Markle had been married to another eminent lawyer, wendy jo adelson. They had those two boys. But their love soured. Markle described the day she left him as his pearl harbor. Adelson said through her lawyer, she is just devastated and scared to death. Police tell abc news, they questioned his exwife. Sources say it lasted for hours. But police say they questioned many who knew him. And the fact there are no suspects, at least officially, that doesnt mean the police arent looking at certain people . I hope they have their eye on certain people. And theyre just not telling us. Reporter only one witness could positively i. D. The killer, markle, bleeding out in his car. You hear the neighbor in that 911 call, urging e. M. S. To hurry. And told they were on their way. They better be if this guys got a shot, living. Reporter 19 krushle minutes passed. The dispatcher blew it. He screwed up. Had they gotten there earlier, he may have survived. Reporter on that 911 call, you can hear the dispatchers confusion. Im changing the reporter the man who runs tallahassees dispatch center, tells abc news the operator didnt hear the caller mention the gunshot wound at first. It was entered as a man down, versus a gunshot wound. Reporter all of that creating a toxic brew of confusion and delay in the response. As one e. M. S. Unit was replaced by another. 19 minutes is a long time. Were making changes in this review to make sure this atmosphere doesnt happen again. Reporter his blog, once used to share his opinions. Now, a place for those who knew him to share their grief. Late this week, investigators increased the reward for any leads to 10,000. Hoping precious clues might help unravel this mystery. For nightline, im matt gutman, in miami. Thanks to matt gutman for that report. And stay with abc news for the latest details on this developing story. Next, the fittest people in the world are flocking to the Crossfit Games. But not everyone can handle the heat. Youve reached the age where you know how things work. This is the age of knowing what needs to be done. So why let erectile dysfunction get in your way . Talk to your doctor about viagra. 20 million men already have. Ask your doctor if your heart is healthy enough for sex. Do not take viagra if you take nitrates for chest pain; it may cause an unsafe drop in blood pressure. Side effects include headache, flushing, upset stomach, and abnormal vision. To avoid long term injury, seek immediate medical help for an erection lasting more than four hours. Stop taking viagra and call your doctor right away if you experience a sudden decrease or loss in vision or hearing. This is the age of taking action. Viagra. Talk to you doctor. Looks like were about to board. Mmhmm. Im just comparing Car Insurance rates at progressive. Com. Is that where they show the other guys rates, too . Mmhmm. Cool. Yeah. Hi. Final boarding call for flight 294. [ bells ring on sign ] [ vehicle beeping ] whos ready for the garlic festival . This guy bringing our competitors rates to you now, thats progressive. When folks think about wthey think salmon and energy. But the energy bp produces up here creates Something Else as well jobs all over america. Engineering and innovation jobs. Advanced Safety Systems technology. Shipping and manufacturing. Across the united states, bp supports more than a quarter million jobs. When we set up operation in one part of the country, people in other parts go to work. Thats not a coincidence. Its one more part of our commitment to america. The intense exercise program known as crossfit inspires obsessive devotion from its disciples. These athletes strive to laugh in the face of pain. And tonight, were going to the Crossfit Games, where the fittest of the fit fight it out. But when the gospel says to grin and bear it, there can be consequences. Heres abcs rachel smith. Reporter that guy squatting with almost 100 pounds overhead is on a mission to become the fittest man in america. Im james hobart, 28 years old. My hometown is otis, massachusetts. Reporter james is here to show his prowess at the Crossfit Games. One of the athletes competing in the fourday smackdown in southern california. For an event like this, try to think how bad its going to feel. Reporter with 10,000 crossfit gyms around the world, the highintensity Strength Training program has become an obsession for millions. Its hard to argue with a body of evidence like this. Do you feel like its become an obsession . Yeah. Reporter for better or worse . For better. It hasnt done anything unhealthy to my life. Only good things. You know what i mean . Obsessive only in the sense that it takes up a lot of my time. Reporter the sport has also come under fire. The crossfit fail videos, showcasing the dangers of the court if not done properly. And james is not immune, either. Check out that. I fell in a hand stand, trying to get the last couple steps. It feels good. Im a little black and blue. Reporter but that wont slow him down. Theres too much at stake. If he wins, 275,000, endorsement deals and fame. Rich froning. Reporter what do you consider being a success for you . And what do you consider being a failure . The goal is always to win. So, that would be the success. The failure is anything less than that. You train all year, thats what youre training for. Try to get back on top of that podium. Reporter james journey to the super bowl of crossfit, began weeks prior, here in massachusetts. It doesnt happen overnight. You know, youve got to take years to cultivate a face like this. Reporter hes been practicing for the big games daily, starting crossfit seven years ago. Even getting his mom in on the act. You are a selfproclaimed mommas boy. You saw that. Reporter i did. Still a mommas boy. I dont think that goes away. Once youre in that, youre locked in. Squat it down. Reporter james who works as a crossfit instructor, put me to the test. Drive up. Punch. Not bad. Reporter its not just the guys that are here to compete. Theres 42 women who will do overhead squats and sprint sleds to prove they are the most fit in the country. Becca voight. Toluca, california. Reporter becca has been training all year long. Every year gets harder and harder. At the event tonight, we have no idea what it is. So, in about three hour, they will unveil it. And then, well probably have about an hour and a half to be ready. First heat here. Reporter and that competition, watch beccas mate, as she makes a run during this sandbag carry, she suffered a knee injury in 20 2008. And now, its acting up. At the medical tent, becca wincing in pain. Do you feel this is something youre going to be able to push through at this point . Absolutely. Its just one of those things. Mind over matter. I know that, you know, when it comes time to play, ill be ready to go. Reporter will there come a point that you would pull out of the competition . I mean, if i couldnt walk, maybe. It would be extreme measures, i think. If it was permanently damaged, my ability to walk. Reporter is competing the best thing for becca . Does the sport end up pushing athletes too far . We went to Crossfit Games director. Its safe to be honest with you, when you start it on your own with no coaching. And i did that. And i know hundreds, if not thousands of people who got into crossfit on their own without proper coaching. Reporter others at the event back up the mantra here, that its not the safety that people are most concerned with. Do you feel, though, that safety is a priority . In the training, absolutely. Safety is always paramount. Were doing things that are safe. But out here, things are a little more intense because theres something on the line. Out here, safety is not the priority. Winning is the priority. And sometimes safety falls to the side. Reporter crossfit trainers only have to go through 16 hours of training. Just one weekend to coach the athletes. Is that enough to keep crossfitters safe . You can get your level one, that lets you know that youve been through the basic elements. Its an affiliate owners responsibility, to take on the quality of products he wants to deliver to his community, by further training. My staff thats all here have been doing this for years. And they study and read constantly. Reporter back on the field, its two hours before the competition. And becca is back warming up. I feel like a newbie. These workouts are not the same. They never have been. Reporter becca and james have the strength to keep going, and move on to the final competition. Becca struggles in pain during this rope climb. But manages to press forward and finish in 24th place. Back in the stadium, with mom cheering from the stands. Go, james. Reporter james completes an Obstacle Course of rope climbing and dead lifts. But its not enough. He ends up in 21st place. James hobart. Reporter why do you do all this . Because i love it. Aside from the physical aspect of it, the community and the people inside of crossfit ive met in the last seven years are amazing. And maybe thats not why i started it. But thats certainly why ill keep doing it. Reporter in a battle of endurance like this, merely completing the race is a victory. For nightline, im rachel smith, in los angeles. Next, how one suburb got taken over by a pack of coyotes. And the other animals who may be your neighbors. Vo this is the summer. The summer of this. The summer that summers from here on will be compared to. Where memories will be forged into the sand. And then hung on a wall for years to come. Get out there, with over 50,000 hotels at 150 dollars or less. Expedia. Find yours. [ doorbell rings ] stall them. [ imitates monkey ] stop stalling. Cascade platinum fights cloudy residue 3x better than the competing gel and helps keep your dishwasher sparkling. Cascade platinum. Eating healthier,tion byhwasher sparkling. Drinking plenty of water, but still not getting relief . Try dulcolax laxative tablets. Dulcolax is comfortcoated for gentle, overnight relief. Dulcolax. Predictable overnight relief you can count on. Many of us live in urban areas where we dont expect to encounter dangerous wildlife. But wild animals are popping up on our home turf more than ever these days. On our streets, in our backyards. And sometimes even in our pools. So, whose home is it anyway . We may think were removed from dangerous wildlife in cities. But whether its these coyotes staking out the neighborhood, this alligator in a swimming pool, or these bear cubs in a backyard tree earlier this week, that sense of security is often just an illusion. Leopards roam city streets at night. Elephants make themselves at home in gardens. And in colorado, elk walk about as if they own the town. The leopard is right here. This is a wild leopard in the middle of the city. Reporter wildlife expert boone smith says wild animals understand our behavior just as they understand the behavior of any prey. Just the whole idea of our routines, our timings, our habits. And no different than an animal in the wild understands what their prey is doing, the seasons and how that system works. They understand the same thing. Its just with us. Reporter the urban landscape is often easier to survive than the wilderness that is normally their home. A black bear can find more calories in a garbage can that a full day of scavenging. In australia, kangaroos love the lush green of the golf course. But dont always appreciate the competition. The kangaroos learned that quick in times of drought. If they needed those resources, we had created them for them. That was not our intent. We had made some of the best kangaroo habitat there was in australia. Reporter in alaska, bald eagles, a protected species, are thriving in this fishing port because residents essentially provide a daily meal with each days catch. You see the legs start to hang. And it makes you think twice about where they want to be right now. Its a real thing to folk theres. They had to learn to deal with. You either learn to deal with it or you have to leave, essentially. Reporter whats the lesson here . Myth says we have to accept that wildlife is always going to be around. We can understand that we do have to go exist. Its not were going to push everything out and do our own little thing. We have to accept that in this dynamic world, wildlife is going to be there in some form or fashion. Urban jungle premiers this sunday, august 3rd on nat geo wild. Thanks for joining us on abc news. Tune into Good Morning America tomorrow. And as always, were online at abcnews. Com. Good night, america. [cheers and applause] ohoh hey, hey hey, how are you . What up . What up . What up . What up, eddie . What up . What up, son . What up . What up . How you doing . Good. What up, man . Hey. Whats up, boo . Whats going on . Come on out here. Yeah whoo. Well, hello, and welcome to millionaire. Todays first contestant is a behavioral scientist. But when hes not studying the human mind, hes busy practicing something called martial arts tricking. From chicago, illinois, yo, lets hear it for tim lewis [cheers and applause] what up, tim . Whats going on . How you doing . Ive never heard of this martial arts tricking. Thats exactly it. Well, itd probably be easier to show you. Do you mind . Okay. All right, lets do it. All right, so this is. Now, its a combination of, like, martial arts and acrobatics, and we want to create the best combothe bestlooking combos with extreme kind of moves. So ill show you a little something. You ready . Am i too close . No, youre good. Oh [cheers and applause] shoot you know, the thing was,