karen pernell did not write the name roc on the wall. her killer had. ose three letters were still a gift to police, because investigators figured he had to know both karen and roc. detectives started questioning the other men in karen's life. >> karen had nicknames for her boyfriends. car guy. that was tim permenter. another one that she referred to as dr. pilot. >> dr. pilot, a british airways captain had recently been sending karen romantic texts. but he was aboard a flight over the middle east when karen was killed. so he was ruled out, as were most of karen's known male friends. all could prove they were nowhere near her house in oldsmar that night. every boy friend except car guy, tim permenter, the one who reported finding karen's body. >> is she conscious? >> no. >> is she breathing? >> i don't know. >> tim was inconsolable during that 911 call, and later would tell detectives he had lost the love of his life, the woman he was hoping to marry. but the people who knew karen best started telling a different story. >> i'm not sure why she stayed in