Tom comes to Laura with his own plan to save Serena, but a double-cross turns deadly, and the identity of the real killer is exposed. Meanwhile, with Danny’s execution just…

Determined to prevent a murder, Laura teams up with Nico, a former cop, and they search for the serial killer’s next victim. Can they save her, catch the killer and…

Clarke struggles to survive on a desolate, scorched earth while her friends in space come across a long-awaited beacon of hope.