With only four hours left, a rogue Jack Bauer stops at nothing to determine who is behind the day's most devastating events, and he uncovers an unexpected lead.
Examining the birth of stars, and how their creation changed the cosmos for ever, leading to planets and life itself.
When Ted, Marshall, Lily and Barney crash a highfalutin party at a swanky New York apartment, Ted gets the chance to mingle with the snooty guests and show off his intellectual side.
Leonard and Sheldon compete for the attention of a famous female physicist.
A robbery-homicide prompts Beckett to invite Demming to assist on a case, giving Castle a ringside seat to their budding romance. When it becomes clear that the two men have very different ideas about how to proceed, the investigation becomes an unspoken competition for Beckett's attention, one in which each man races to solve the case, as Beckett referees between her two admirers.
When a suburban soccer mom is murdered, the CSIs uncover her family's dark past, while Delko continues his undercover mission.
When things get tense between Rufus and Will, Serena chooses to stand behind her father, while at the Rufus is made to feel like an outsider in his own family. Meanwhile, Jenny deliberately shares information with Will that may ultimately destroy Lily and Rufus' marriage. After many failed attempts, Chuck makes one last grand gesture to reconcile with Blair, hoping she will finally accept the fact that they are destined to be together.
Nathanstruggles to reach an increasingly despondent Haley, while Quinn leads Jamie on a Tree Hill treasure hunt. Julian shows his finished film to Brooke, and Clay is forced to deal with a deranged Katie.
Chuck struggles with disturbing dreams and now he believes his most recent dream predicts danger for a visiting head of state. General Beckman however, is unconvinced and assigns Chuck to meet with a CIA psychiatrist Dr. Leo Dreyfus. Meanwhile, Ellie gets surprising news and Anna returns to the Buy More to talk to Morgan.
The evolution of galaxies, from clouds of cold gas floating in space 13 billion years ago, to the vast gravitationally bound systems of today.
During a session with Dr. Nolan, House recounts the case of a woman who arrives at the Princeton Plainsboro emergency room with an unexplained illness and no recollection of who she is. While trying to solve the mystery of the woman's illness, House must also help her piece together her identity.
Alan tries for an intimate night at a hotel with his new girlfriend, while Charlie takes a different approach to obtain the "girlfriend experience"
Love It or List It contractor Eddy and his wife, Martine, bought their home two years ago with plans to renovate. But Eddy struggles to manage his time between work on the show and work at home.
Coop arranges a date for Georgia and Eddie while Jackie's daughter Grace starts therapy.
Anya and Sav plan on going to the formal together, but when Sav's parents introduce him to his arranged marriage, everything changes.
After a heated chat, Natsu and Gajeel share a dragon-related revelation. The triumphant wizards of Fairy Tail get right to work on a new guild headquarters. When Lucy’s friends pay her apartment a visit, she’s nowhere to be found!
Jacqueline's daughter Ashley's behaviour continues to cause trouble for her mum. Meanwhile, Caroline does her best to stay out of her daughter's relationship problems, Teresa and Danielle's daughters are both invited to model in NYC Fashion Week, and Danielle extends an olive branch to her former friends to celebrate Christine's success.
After an accident, Tawni attempts to ban gum from the set. This complicates things for Sonny, who believes that chewing gum is what makes her funny.