Dennis Rader is back (ugh), and Part III picks up right where we left off in 1977: with a monster hiding in plain sight. In this episode, we dive into Dennis's bizarre mix of obsessive murder-planning (then abrupt & outrageous spontaneousness), the murders of Shirley Vian and Nancy Fox & cops finally starting to realize their is a serial killer amongst them, and Dennis getting a WHOLE lot bolder in his game of cat and mouse with police.

This is the one where:

• Dennis gets annoyed that 3 randos in prison try to take "credit" for the Otero murders so he leaves a letter for the newspaper in a library book
• Dennis commits his 7th and 8th murders (of single mother Shirley Vian and 25 year old secretary Nancy Fox)
• Once again Dennis gets annoyed that the police don't find one of his murders fast enough so he liter ...