A cabin burns down in the woods revealing two bodies, one of a modern-day witch and one from the days of the Salem Witch Trials leading Booth and Brennan into the world of Wicca to find a killer. Meanwhile, when Hodgins' reckless driving gets him and Angela arrested and thrown in jail, Sweets and intern Clark Edison step into unfamiliar territory to help out the team.

Sensing that he is in danger, a hero makes a bold move to save himself by fooling the entire tribe. Meanwhile, a vicious power struggle emerges in one alliance and two of the strongest villains find themselves pitted against one another.

Demetri and Agent Banks attempt to track down a killer as questions arise about the universe course-correcting itself, when people who thought they'd escaped their fates are found dead; Mark reluctantly agrees to help Simon find his sister, Annabelle, but discovers he's withholding the truth about her true circumstances; the FBI discovers the identity of Suspect Zero; and Nicole learns the whereabouts of Keiko - the woman in Bryce's flashforward - but struggles with whether to share this information, due to her growing feelings for him.

Isobel returns to town and stuns Alaric (Matt Davis) with her attitude and her demands that he arrange a meeting with Elena When mother and daughter finally meet, Isobel refuses to answer most of Elena's questions, but reveals that she will stop at nothing to find the mysterious invention Johnathan Gilbert has been searching for. Isobel's dangerous actions lead Stefan , Damon and Bonnie (Katerina Graham) to step in and help Elena deal with the situation.

The sexual tension between Jeff and Britta is a popular topic among the members of the group; a contest turns the campus into a war zone.

Leslie hosts a late-night shift for a local telethon, and lands former Indiana Pacer Detlef Schrempf as a celebrity guest. Meanwhile, Mark has big plans for his relationship with Ann.

A mother thought to be grieving for the loss of her family three years ago becomes a suspect in a CSI investigation.

Bailey preps the team with mandatory sensitivity training prior to admitting a 700-pound patient with compounded medical issues, and the case proves to be challenging in every sense of the word. Meanwhile Derek has to come face to face with a former patient's husband in a wrongful death deposition, and spending time with a heart patient's daughter opens up some old wounds for Cristina.

Michael suspects Donna is cheating on him and puts P.I. Dwight Schrute on the case. Meanwhile, Andy is frustrated when no one takes his customer's complaint seriously.

Crowley tells Bobby he will give him the location of Death, the fourth horseman, in exchange for his soul. Knowing Sam and Dean need that fourth ring to stop the Apocalypse, Bobby reluctantly agrees. Sam and Dean confront Pestilence, but he unleashes a deadly virus upon them, so Castiel must intervene on their behalf. Dean has a meeting with Death to discuss Lucifer, and an unholy alliance is formed at a very high price for Dean.

Peter teams up with a local law enforcement official, Sheriff Mathis, on a serial murder investigation with ties to Newton. Meanwhile, Walter copes with the possibility of being sent back to St. Claire's, and someone from the "other side" pays a visit.

Mother's Day sees TGS cast and crew deal with visits from their mothers.

Naomi begs Fife to use his still experimental treatment to help William's advanced ALS. Violet and Amelia treat a woman with a brain tumor, while Sheldon decides to vie for Charlotte's affections.

Patrick Jane and the CBI team investigate the death of a mathematical genius by a gun-wielding clown

Mario Batali

Stewart Brand

Journalist Brian Williams; author Beth Ostrosky Stern; Court Yard Hounds perform.

Samuel L. Jackson; Kara DioGuardi

Shaun Presland shows how simple Japanese is.

There is chaos when a riot breaks out at Fenchurch East prison. The riot team ends up being largely outnumbered and Sgt Viv James is left behind when they are forced to retreat. Jim blames Gene for Viv's capture on Gene. Alex continues to doubt Gene. After Alex is unable to negotiate Viv's release things don't look good. Alex finds herself having to put her differences with Gene to one side to avert a tragedy.

The popular news quiz returns, with team captains Paul Merton and Ian Hislop, guest host Jo Brand, and guest panellists Jon Richardson and Lembit ?pik.

A moribund line-up of guests this week, including one I've never heard of and an overated band. Here's to next week...