merillat to interview him.a trip to the crime scenes might provoke something in daniel corwin. merillat: i brought him to the car wash. i pulled into the bay that he described as being the one he drove into. and it was really odd to me that he appeared to go into, like, a trancelike state, or -- at first, i thought he was faking, but he continued to do this every time we met. so i think it was real. but he started reliving the events of that night when mary risinger was killed. ♪ narrator: even corwin admitted he got into a trancelike state during these attacks, and this might explain one other commonality with all his crimes. all of them were spontaneous, spur-of-the-moment attacks in public places with plenty of potential witnesses. they're obviouy high-risk cres from the standpoint that it was high risk to the offender. the suspect is putti himself at high risk of being ught for coitting that kinof a crime. narrat: evtual, coin confessed for coitting to a total of three murders, including the murder of mary