Still reeling from finding out about Frank’s continued affair, Abby seeks justice for a debt-ridden widow whose husband might have faked his own death.

Human beings are reduced to ash statues and Broyles realizes that the same person responsible murdered five other persons four years ago… a case that he never solved.

Tess acquires a Kryptonian box that once belonged to Lionel Luthor. When Clark accidentally activates the box, he’s transported to a parallel universe where Lionel found Clark in the cornfields…

The team tries to relax during a mandatory day off, until an explosion leaves three people dead — and reveals that one scientist is a walking time bomb.

Dr. Jennifer Keller’s body is inadvertently taken over by a cunning thief, Neeva Casol. While Neeva tries to escape Atlantis, Keller finds herself imprisoned with a death sentence on another…

As Dr. Rodney McKay and Dr. Daniel Jackson is held prisoner by the Vanir, they make a startling discovery about who they really are. Meanwhile, “Todd” and his Wraith hijack…

The team is shocked when an old friend, believed to be dead, miraculously returns to them. Teyla plans an escape from Michael’s captivity.

When a mysterious alien organism takes Dr. Jennifer Keller as its host, the newly revived Dr. Carson Beckett and the crew desperately search for a serum to save her from…

Floating in deep space with the city’s protective shield failing, the team must do all they can to keep Atlantis alive. A radical injury threatens Dr. Weir’s life.

During an off-world mission Colonel Sheppard unknowingly becomes host to an alien entity, which infects others in Atlantis and afflicts them with terrifying nightmares.

When a virus causes amnesia in everyone except Teyla and Ronon, the Atlantis team must work together to find a cure before their memories fade entirely.

Sam and Castiel track down a Shaman, who may be able to help a friend. Nick continues to spiral down a dark path as he looks for answers surrounding the…