A convicted murderer convinces Jane to re-open his case and prove him innocent in exchange for information on Red John. When ordered to stay away by Minelli, Jane quits the CBI in single-minded pursuit of the convict's case.

The team track down a serial killer who has turned the art of picking up women into a means of preying on his next victims.

Jason and the team must protect an ambassador who refuses to evacuate as the country becomes increasingly unstable. Clay and Stella take their relationship to the next level.

When a fertility lab technician is murdered, details regarding her secret personal life are revealed -- leading to several possible suspects. Also, the tables are turned when Watson is investigated by an NYPD detective.

The team investigates the macabre murder of a marine who was guarding a gifted young girl with access to high level military secrets.

Eric and Nell discover a clue to Hetty's whereabouts as her captors in Vietnam use torture. The team puts together a rescue mission with the scarce information they have.

Paige re-conjures Mr Right, but unknowingly releases his evil twin, Mr Wrong, who tricks her into wanting to kill her sisters.

Callen, Sam, Kensi and Deeks join up with Hetty's team from the Vietnam War in a dangerous, off-the-books mission to save Hetty.

Nathan faces off against Sylar to keep him from meeting the president, while Sylar has his own plans for his new partner. Hiro learns that there are repercussions to regaining his ability, and Matt is forced to go to extraordinary lengths to protect his future with his family.

Sylar continues his unusual partnership and begins to have an unexpected identity crisis, Hiro and Ando take measures toward bringing down Building 26, and Matt's new-found fatherhood changes his priorities. Elsewhere, Nathan sets a plan in motion to right the wrongs of his government operation.

Grissom and Sara check out a corpse found covered in hazardous lye, and Nick tries to puzzle out how a woman could have drowned while hiking in the desert.

The investigation into a chief warrant officer's death reveals that his wife has been abducted, leaving the team with a 22-hour deadline. Senior FBI Agent Fornell assists with the case.

Katie threatens to take legal action against Violet for breach of confidentiality, and although Violet feels that she hasn't done anything wrong, she soon realises she'll have to defend her actions to more than just Katie.

A funeral questions the culture and future of Fisher and Diaz; Brenda gets information from her doctor.