just asked a little bit of questions about keith jesperson. ♪ >> and we flew down ahead of him. we were able to set up there, wait for him to show up. >> we identified ourselves as detectives and asked if he'd come to the sheriff's office to talk to us. he said he'd absolutely go there, no problem. and that was our first insight into keith jesperson. because keith jesperson thoroughly enjoyed talking about about how great keith is. >> can you just state your full name please? >> my name is keith hunter jesperson. >> and your date of birth? >> april 6, 1955. i got introduced to truck with my father in jesperson contracting in 1972 when i was still in school. >> how did you get the nickname the happy face killer? i had the opportunity to speak with keith jesperson back in 2010. i found him to be polite, and yet he spent a lot of time talking about himself. >> what was your childhood like? >> well, i considered it a good childhood. you know, my father and mother were good people. we had tough love in our family, and my father used his belt and my