The remains of a hoarder are discovered; Angela’s father (Billy Gibbons) visits; Booth and Brennan are each confronted with unique opportunities.

The May 13 episode of Bones will revisit the Gravedigger storyline as the culprit goes to trial. We’ll also see the return of Brennan’s father.

When a cabin in the woods burns down, the bodies of two witches are revealed; Angela and Hodgins are arrested.

Booth and Brennan investigate a death at a rock `n’ roll fantasy camp.

When human remains are discovered in the belly of a shark, Brennan and Booth are brought in to identify the missing person. Evidence suggesting the victim had been the prey of several fish directs the team’s investigation to The Aquarium of the Atlantic, where a guest lecturer and notorious self-help guru preaching the healing power of the ocean has gone missing. Meanwhile, both Brennan and Booth navigate their own relationship when a marine biologist shows interest in Booth.

Brennan returns to her former high school to investigate when unidentified human remains are discovered; Booth and Brennan pose as a married couple at her high school reunion.

When Dr. Sweets’ book gets published he makes Booth and Brennan read it and they tell him about the first time they met and go back 6 years ago and found that they hated each other. Expect to see sparks fly and re-think their relationship. And see Zack Addy again and see Cam as a New York Coroner.

Dr. Sweets deals with post traumatic stress after his subway train is derailed by flood water; a partially skeletonized body is discovered.

Brennan and Booth investigate a set of uniquely disfigured remains allegorizing biblical text. As they acquire more information about the victim, a former patient of Dr. Adam Copeland at Havenhurst Sanitarium, they are confronted with suspects who are hard to characterize as either good or evil. Meanwhile, Jeffersonian intern Arastoo Vaziri reveals a secret about his past.

When a human skeleton is discovered in the trenches of an old Civil War battleground, Brennan and Booth are called to the case. Despite the historical location, Brennan quickly identifies the bones as belonging to Dan Pinard, a present-day local dentist. While Booth investigates suspects, including the victim’s former boyfriend, Hodgins and lab intern Vincent Nigel-Murray work doggedly to clean the bones of a stubborn clay residue which is preventing the team from determining a cause of death. Meanwhile, Booth’s brother, Jared, returns from his travels with some suprising news.