When everyone learns about Greendale’s first dean, they embark on a mission to find his old computer lab; Subway enlists Chang to spy on the group as part of its plan to take over the school.

Clarke’s newfound romance with Finn is threatened. Octavia suffers a blow to the head and wakes up to find a Grounder watching her. On the Ark, Abby exposes Kane’s plan to reduce the population of the Ark. Jaha and Abby notice a signal and realize at least some of the 100 must still be alive on Earth.

Oliver, Canary, Diggle and Felicity return to the lair and find Slade waiting for them. An epic battle breaks out and one member of Team Arrow is sent to the hospital. Thea hits her breaking point, but just as Oliver is about to reach her, Slade intervenes and Oliver is faced with a choice — his battle with Slade or his family. Meanwhile, Laurel struggles with a new secret.

Oliver, Canary, Diggle and Felicity return to the lair and find Slade waiting for them. An epic battle breaks out and one member of Team Arrow is sent to the hospital. Thea hits her breaking point, but just as Oliver is about to reach her, Slade intervenes and Oliver is faced with a choice — his battle with Slade or his family. Meanwhile, Laurel struggles with a new secret.

With Colonel Glenn Talbot now on their trail, Coulson and his team seek refuge in the last place anyone would look, where they begin to uncover S.H.I.E.L.D.’s most dangerous secrets–secrets that could destroy them all.

When Paracelsus takes control of Warehouse 13, it proves to only be the first step in his plan to recreate the entire world in his image. To stop him, Pete and Myka must follow him back through time to 1541 and prevent him from killing the Regents and becoming the permanent master of the Warehouses.

A who’s who of honored guests turns out for Joffrey and Margaery’s wedding in King’s Landing, but the king’s taste in entertainment rubs many of them the wrong way. Meanwhile, Bronn gives a lesson to an unlikely pupil; Bran’s vision helps map out his journey; Stannis loses patience with Davos; and Ramsay takes a perverse delight in his new pet.

Kiera and Carlos work to free hostages including Dillon, taken prisoner by Liber8 at a television station. Meanwhile, Kellog and Alec’s business alliance falls apart, turning the two men from partners to adversaries.

Kiera and Carlos work to free hostages including Dillon, taken prisoner by Liber8 at a television station. Meanwhile, Kellog and Alec’s business alliance falls apart, turning the two men from partners to adversaries.

Kiera and Carlos work to free hostages including Dillon, taken prisoner by Liber8 at a television station. Meanwhile, Kellog and Alec’s business alliance falls apart, turning the two men from partners to adversaries.