David H. Lawrence XVII

Jane discovers an important clue to Red John's methods as the team encounters four of the suspects – Gale Bertram, Reede Smith, Ray Haffner and Sheriff McAllister – and the CBI investigates the case of a software engineer killed by a drone strike.

When a new murder leads to a connection with an infamous serial killer, Grissom secretly joins the class of well-known criminal pathologist Dr. Raymond Langston, to gain access to the killer and get a crack in the case. (TV-14)

Armed with H.R.G.’s (Jack Coleman) old files and a taser, Claire (Hayden Panettiere) attempts to take down her first target -- Stephen Canfield (Andre Royo), a Level 5 escapee with the ability to create black holes -- unaware that others are closing in. Meanwhile, in horror, Peter (Milo Ventimiglia) flees from all the death and destruction in the future, only to grimly discover how deeply the experience has changed him. Frustrated that Adam Monroe (guest star David Anders) didn’t get them closer to "the formula," Hiro (Masi Oka) takes a stab at becoming friends with Daphne (guest star Brea Grant) and new associate Knox (guest star Jaime Hector), much to Ando’s (James Kyson Lee) dismay. Later, Suresh’s (Sendhil Ramamurthy) urge to correct research errors puts Maya (Dania Ramirez), among others, in a sticky situation. Linderman (guest star Malcolm McDowell) advises Nathan (Adrian Pasdar) to stick by Tracy (Ali Larter), seeing that they could accomplish great things together. In Africa, Matt (Greg Grunberg) sees his vision of "happily ever after" destroyed. Zachary Quinto and Cristine Rose star. Alan Blumenfeld, Ashley Crow, Jessalyn Gilsig, Brea Grant, Jamie Hector, David H. Lawrence XVII and Andre Royo guest star.

Impressed by his sudden ruthlessness, Villains Knox (guest star Jamie Hector) and Daphne (guest star Brea Grant) bring Hiro (Masi Oka) -- among others -- into the Pinehearst fold, and give him an assignment. With Angela (Cristine Rose) and the Company paralyzed by recent events, Peter (Milo Ventimiglia) goes directly to Pinehearst for answers, and irrevocably changed by the shocking meeting. Meanwhile, Claire (Hayden Panettiere) and her mother Sandra (Ashley Crow) attempt to free Meredith (Jessalyn Gilsig) from the thrall of escaped Villain Doyle (David H. Lawrence XVII), who has the ability to take mental and physical control of others. Later, Nathan (Adrian Pasdar) brings Tracy (Ali Larter) to Suresh (Sendhil Ramamurthy), hoping he can shed light on the surprising origin of their abilities. Jack Coleman, Greg Grunberg, James Kyson Lee, Zachary Quinto and Dania Ramirez star. David Anders, Alan Blumenfeld, Robert Forster and Blake Shields guest star.

After reuniting Sylar (Zachary Quinto) and Elle (guest star Kristen Bell), Arthur (guest star Robert Forster) orders them to find Claire (Hayden Panettiere) and bring her to him. Matt (Greg Grunberg), Hiro (Masi Oka) and Ando (James Kyson Lee) team up together and follow Daphne (guest star Brea Grant) to her hometown of Lawrence, Kansas to discover what she’s been hiding. Meanwhile, Nathan and Peter Petrelli (Adrian Pasdar and Milo Ventimiglia) travel together to Haiti in search of the only man that can stop their father from destroying the world, the Haitian (Jimmy Jean-Louis). Jack Coleman and Ali Larter also star. Robert Forster also guest stars.