The Source messes with Piper's mind, sending her into a deep coma. Phoebe and Paige must find a way to wake her up fast, before The Source convinces to give up her powers while in her delusional state.

The twist changes the entire game. All alliances in the game are crushed when each tribe is asked to select three of its "best" members, "best" meaning whatever they might interpret that to mean. When the three chosen members from each tribe show up at a neutral location, they are informed that they are now members of the other tribe. A switched Silas, split from his alliance mates, is voted out of Boran.

Monica believes that her new maid is stealing from her. Joey tries to convince Rachel not to move out after learning that she doesn't plan on living with him after the birth of her baby.

Grissom and Nick investigate the death of a book restorer while Catherine and Sara are called to the scene of a fatal train crash.



When the female book restorer is found dead and locked inside a "cage," a temperature-controlled workspace, Grissom and Nick attempt to determine whether this is a case of suicide or homicide. They discover that the key to solving the case may be a co-worker who suffers from autism.



Meanwhile, Catherine and Sara are sent to comb through the wreckage of a collision between a train and an SUV and find out if it is a case of road rage or simply an accident.

Peter goes with Lois to visit her sister Carole, who is now pregnant, but alone since her husband walked out on her. Carole goes into labor and Peter helps deliver the baby. Caught up in the moment, Peter and Lois decide that they want another baby. Stewie however, does not agree. Stewie does everything possible to keep Peter and Lois away from each other, but when he is locked out of their room, he is forced to take desperate measures. Stewie ends up shrinking himself down to microscopic size and seeking out his sperm-brother inside Peter's body. Instead of trying to kill his unborn brother Stewie and him unite to destroy Lois.

While a baleful Grace wallows in bed as she grieves over losing her boyfriend Nathan, an enterprising Will tries all his old tricks to spring her from her mattress and back into the real world's whirl. But when Jack and Karen arrive, Will fears that their bizarre efforts to help might actually drive Grace futher into her shell -- not to mention therapy.

A new med student assigned to Carter finds all sorts of surprises in store for him on his first day. Elizabeth spends her day searching for the angel of death, finding that all signs point towards Dr. Babcock. Nicole has a rough day training to become a nurse's aide, and draws Abby's ire after Luka invites her into a trauma. Puzzled by his grandmother's fainting spells, Carter discovers that she is at great risk for a heart attack or stroke. He and Susan treat a law student/med student who has been cutting herself. The two grow closer, as Carter finally tells her about his stabbing and drug addiction. Mark picks up Rachel at school after she's suspended. Peter is sued by Roger for custody and takes a DNA test to determine whether he is Reese's real father. Despondent over badly injuring a young skateboarder, a mall security guard tries to hang himself.

Tonight, actress and comedian Jennifer Saunders.

ALL STAR: Firestorm III Vs Panic Attack House Robots: Sir Killalot and Dead Metal
Firestorm pinned Panic Attack against the wall. Panic Attack never recovered.
ALL STAR: Behemoth Vs Hypno-Disc House Robots: Sgt. Bash and Dead Metal
Dead Metal was given a yellow card for attacking Behemoth. When Dead Metal attacked Behemoth again, he was given a red card and sent back to his CPZ! Behemoth pushed Hypno-Disc onto the flame pit and Hypno-Disc broke down.
MAYHEM: Wild Thing Vs Arnold A. Terminegger Vs Fluffy House Robots: Sgt. Bash and Sir Killalot
Fluffy broke down. They were placed onto the floor flipper and flipped into the Pit! Wild Thing and Arnold A. fought until time ran out. The judges decided to let Arnold A. go through to the Annihilator.
CHALLENGE BELT: Behemoth Vs Stinger House Robots: Sir Killalot and Dead Metal (if DM attacks Behemoth, it's off to the showers)
Behemoth clamped Stinger in place with his scoop and axe and pushed Stinger into the Pit.
INTERNATIONAL INFERN

TEAMS: Ian Hislop & Rosie Boycott; Paul Merton & Richard Bacon