With one toe in the Oval Office, political honcho gets jail time PERV on minor girl. PLUS Library visits lead to murder charge, and 'demon-possessed' kid evicted

A librarian's observation of a man's reading habits helped pin a murder charge on him. Curtis Nichols allegedly researched legal defenses before strangling his wife to death. Anthony Weiner's day of reckoning for sexting with a teen has arrived. The former New York congressman is in court to learn how long he'll be in prison for sex messages to a girl. The parents of a 7-year-old kicked their son out of their Texas home because they believed he was possessed by a demon. Nancy Grace is joined by forensics expert Joseph Scott Morgan, psychologist Caryn Stark, reporter Steve Helling & child advocate Ashley Willcott.