Shawn and Gus attend a party hosted by an aging rockstar named Billy Lipps, a man the SBPD arrested years ago for a murder he doesn't remember committing.
In the series finale, Mary finds herself caught between her "model" witness and an unexpected family reunion, while radical changes take place around the WITSEC office.
With Mary's father on the lam and out for vengeance, she finds herself under FBI surveillance. In order to clear her name, she'll have to lose her tail and track down her own father before anyone else does.
When Mary's fugitive father turns up, his return puts Brandi and Jinx in danger. Revelations abound as Mary struggles to determine whom she can trust.