“Happy Face Killer” aka Keith Hunter JespersonIf you’re happy and you know it… murder strangers along the interstate? Keith would kill women and taunt the media with letters signed with an ironic smiley face.“I-5 Strangler” aka Roger KibbeIn the 1970s Lou Ellen Burleigh went for a follow-up job interview and was never seen again. Decades would pass before her family would have closure and Roger, better known as the I-5 Strangler, would take many more young women’s lives.