. >> craig rideout, that of seven, care deeply about his kids. >> he was a loving man. provider, warm. >> so, it was puzzling and alarming when he vanished. >> to say craig is not. here i said that's weird. >> i didn't know what was. happening >> i know something is wrong. i don't know how wrong. >> a disturbing discovery in the basement. >> articles found on the walls. >> he appeared there was some kind of ambush. >> revelations about craig's wife. >> craig didn't want to be. there was a romantic relationship between them. it became painfully obvious that there was. >> and in the park, two young men acting strangely. >> they identified alexander right out. >> the victims to? since >> the victims to. sounds >> finally, a string of security videos would lay their the bone chilling truth. >> a diabolical plan is forming here. >> it appears that way. >> i was stunned, absolutely stunned. >> remember just holding him, crying. >> this is a family divided like no other. >> yeah. ♪ ♪ ♪ >> hello, and welcome to dateline. the rideout appear to be a tight-knit family. so when pare

. >> craig rideout, that of seven, care deeply about his kids. >> he was a loving man