Begins: Sunday, Mar. 31
Description: Season 3 will be based roughly on the first half of A Storm of Swords, the third of the A Song of Ice and Fire novels by George R. R. Martin. Martin will write the seventh episode.
Watch for: David Benioff has alluded to a powerful and memorable scene in A Storm of Swords, slated to feature in season 3, as one of his motivations for wanting to launch the TV adaptation in the first place. New cast members this season are legion and include Diana Rigg, Thomas Sangster, Ciaran Hinds, and Mackenzie Crook.
Begins: Monday, April 15?
Description: The crises involving Artie's vision and the astrolabe threatens to have wide ramifications for the world.
Watch for: Caprica alumna Polly Walker will figure in a five-episode arc as a new enemy of the Warehouse team. Walker will appear as Charlotte Dupres, who, we're told, has lots of secrets and layers of intrigue.
Network: BBC America
Description: The Eleventh Doctor continues his journeys with new companion Clara.
Watch for: Some of this season's episodes, the first airing in the program's 50th anniversary year, will be written by Mark Gatiss, Neil Cross, Stephen Thompson, and Neil Gaiman, as well as a story called "Journey to the Centre of the TARDIS."