a possible connection to serial killer john dunkel. >> owe john was an evil man. >> the district attorney gave the i team access to dunkel's case file. i spent a week combing 12 boxes of evidence, transcripts audio and videotape. in the touchb he belmont the disappearance of a 15-year-old john davies and stabbing death of 12-year-old lance turner went unsolved for years as did the murder of shaen denel in sacramento. then dunkel went to men's colony in san luis obispo on a burglary charge got into what flagstaff said was a wrip a cell mate and confessed about killing those three boys. we found a recording of the cell mate reporting him to authorities. >> i didn't think it was serious. >> he wanted a deal on his own manslaughter charges so he convinced dunkel to write details of the murders, draw out maps and tell authorities everything. >> documents show dunkel also told his cell mate and a sek inmate that around the time of kevin collin's disappearance a killed a fourth victim by throwing them off the golden gate bridge but made it look like a suicide attempt. the description also appear

. >> by the time he stepped in front of the camera john dunkel was old. and ready to put on a show. >> this is great. i had an urge to kill he took belmont police on a tour of his crime scene. >> and i killed him and placed his body on top of the mountain. do you want to just walk up the trail? >> he showed him where he stashed a murder weapon and seemed to get emotional, became annoyed by questions. >> what is going through your mind at the time? >> going through it. >> okay. >> belmont 1971 we never had a case close to this magnitude. it had the community locking their doors. disappeared from his home in the middle of the night. 12-year-old lance turner died near daytime soccer practice. 12-year-old sean dinel died in a sacramento park just after dark. police told media but they lackedtofdz make an arrest. their last resort paid off. >> when he moved to sacramento we planted a female detective in the fast food restaurant he was working in. >> she became his drinking buddy, wore a wire ask called for b whupe snuck into a home. e drunkel awaited trial on

. >> by the time he stepped in front of the camera john dunkel was 25 years old and ready to put on ashow. >> when i was in 6th grade i had an urge to kill. >> he took belmont police on a tour of his crime scenes. >> and i killed and placed his body -- >> did you want to take a step there or walk around? go ahead. >> he showed them where he stashed one of his murder weapons. he seemed to get emotional a couple times and became annoyed by the detective's questions. >> what was done here? >> i started in belmont in 1971. we never had a case that was even close to this magnitude. it really had the community locking their doors and wondering what was going on. >> 15-year-old john davies disappeared from his home in the middle of the night. 12-year-old lance turner disappeared from his shocker practice. sean danel disappeared after dark. and police suspected it him in each of the crimes. even told the media, but they lacked evidence to make an arrest. their last resort paid off. >> when he moved to sacramento we planted a female detective in the fast-food restaurant he was working in. >> l

. >> by the time he stepped in front of the camera john dunkel was 25 years old and ready to put on a show. >> when i was in 6th grade i had an urge to kill. >> he took belmont police on a tour of his crime scenes. >> and i killed and placed his body -- >> did you want to take a step there or walk around? go ahead. >> he showed them where he stashed one of his murder weapons. he seemed to get emotional a couple times and became annoyed by the detective's questions. >> what was done here? >> i started in belmont in 1971. we never had a case that was even close to this magnitude. it really had the community locking their doors and wondering what was going on. >> 15-year-old john davies disappeared from his home in the middle of the night. 12-year-old lance turner disappeared from his shocker practice. sean danel disappeared after dark. and police suspected it him in each of the crimes. even told the media, but they lacked evidence to make an arrest. their last resort paid off. >> when he moved to sacramento we planted a female detective in the fast-food restaurant he was working in. >>