welcome to very scary people. i m donnie wahlberg. after torturing and killing seven people, demented serial killer btk contacted police to boast about his brutal acts. he threatened more victims would follow. his real identity was still a complete mystery. he dared cops to find him. the city of wichita was on edge. wichita police form a secret task force of seasoned detectives to track down btk. they need to capture him before he kills again. here is part two of btk: the taunting. hatteberg: wichita, kansas, was in the middle of america, and nobody locked their doors. it was a great little town to be from. jordan: the morning of january 15, 1974, was just a regular school day in the otero household until the unthinkable happens. an intruder enters their home and commits atrocities against this innocent family. i saw my parent s bodies it just felt like somebody had ripped my chest wide open and pulled my heart out. jordan: and investigators are trying to piece
Brady: part of the work was establishing a department database. we would look at, for example, there was a certain gun which was used in one of the killings, and so we did research on all of those kind of guns, found every person who ever bought such a gun in the united states, and that went into a database. the fbi said, there has to be a pattern to these crimes. one of the detectives thought that the killer was choosing certain house numbers to kill people. i built a database for them that tracked how far, let s say, sex offenders lived from crimes. o connor: they did a fantastic job. i mean, they ran down leads. incredible leads. they never gave up. they tried every lead. it was just they just ran out. the leads ran out. i wondered if there is a pattern. why can t i find it? the point is, these killings were random.