the killers. >> what little information that you know, please just forward. >> police had urged her to make the appeal, hoping that all that emotion would help generate some much needed leads. though there was one lead both amazing and ultimately frustrating. right there, just below the roof line of cindy and orlando 's house was a security camera. north miami police major, trevor shinn. >> we had video footage that we obtained from the victim's home. >> that's the camera that captured father and son heading out of the house and down the street on that last walk they took together. then watch this. a car barrels up to the curb. two men burst out, guns drawn. run around the corner out of camera range. that's where they opened fire on orlando and noah. within 15 seconds, they're back in the car, speeding away. but they're not done. >> he was on the ground. they come back by and now you