Brennan's theories about the Ghost Killer start to gain traction, following the discovery of a young heiress's body carrying his or her signature.
Cooper is asked to testify when a woman on death row petitions for a mistrial; Beth is put in charge of analysis.
Virginia's strapped-for-cash cousin Delilah visits unexpectedly; Jimmy panics when Maw Maw takes off on Sabrina's moped.