A fan letter asks Karl to reveal the most romantic thing he's done for his girlfriend on Valentine's Day. Another fan asks him to interpret Wittgenstein's statement "If a lion could talk, we could not understand him." From Karl's diary: He creates a jingle after giving a homeless man some change, and describes his trip to Malaga, Spain. In "Monkey News": Karl relates the story of Enos, a monkey who flew in the space shuttle in the 1960s.
See how Replica foods; traffic cone dispensers; rocking horses and London taxis are made.
Much to Clark's surprise, Martha Kent returns to Smallville with her new boyfriend, Perry White in tow. Lois and Perry realize they are both working on the same story about the Red Queen, and decide to team up, which ultimately puts them in serious danger. Chloe helps Clark search for the Book of Rao, which they believe contains information on how to stop Zod and his army.
Alex discovers her friend Stevie is leading a wizard revolution. To the dismay of Justin and Harper, she decides to help Stevie with her quest to make sure no wizard ever has to give up their powers again.
Catering an orgy proves to be the wrong place for Ron to deal with his recent breakup. Roman seizes the opportunity to help the host create the ideal orgy atmosphere.
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.
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.
A kidnap drama on the ocean and relationship tremors below decks rock Hammersley as she sails the Coral Sea.
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.
In Noyo County, Washington, Peter stumbles across a grisly murder with ties to Newton and First Wave. He is forced to team up with a suspicious sheriff to get to the heart of the case. Meanwhile, Walter has trouble functioning without Peter, and worries he will be sent back to the mental institute.
Patrick Jane and the CBI team investigate the death of a mathematical genius by a gun-wielding clown.
Isobel returns to town and stuns Alaric 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 to step in and help Elena deal with the situation.
The first prize of priority registration engulfs Greendale Community College in a Spring Fling paintball war.
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.
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
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.
Bummer is having a breakdown, so the groms teach him to be chill and relaxed. But they do too good of a job and Bummer's mellowness gets him fired. Lo gets a lesson from her tough-as-nails Daddy on how to deal with her daycare kids. Meanwhile, Johnny finally scores a date with Emma, but it doesn't go the way he planned.