Kennex and Dorian investigate when a smart home turns on its occupants.

Lex and Oliver Queen return to their old prep school for a reunion, but Oliver’s old friends (and Lex’s old enemies) start dying in mysterious accidents. Meanwhile, Clark learns that…

When the corpse of a handsome young man asks for Tru’s help, she quickly learns he’s a determined firefighter killed trying to save two children trapped in an apartment building…

Sheppard tries to convince Weir to mount a rescue mission to free Colonel Sumner, Teyla, and the others captured by the Wraith.

The Atlantis base is threatened when the team discovers that an alien entity is in the city. McKay’s experiment with alien technology goes awry.

A new Stargate team embarks on a dangerous mission to a distant galaxy, where they discover a mythical lost city — and a deadly new enemy.