McKay, Carter, and Keller are trapped in an underground chamber while on an off-world mission, with no apparent means of escape.

As Michael finalizes plans for the escape, his fellow plotters begin to turn on him. Meanwhile, Whistler ponders a betrayal when Sofia is threatened.

Amanda's presence puts the Tragers into an awkward position when a social worker comes to evaluate their fitness to take care of Kyle.

While on personal leave on Earth, Sheppard and Ronon learn that scientists have engineered a human-form Replicator — who is now on the loose.

Kyle and Amanda's relationship hits a period of uncertainty after she makes a surprise visit home, but is uncharacteristically cagey about the reason why. Meanwhile, Jesse loses her patience with…

Walt and Jesse attempt to tie up loose ends. The desperate situation gets more complicated with the flip of a coin. Walt's wife, Skyler, becomes suspicious of Walt's strange behavior.

Colonel Sheppard and Dr. McKay must protect a child princess on a pilgrimage before she can become queen, and learn that she has dangerous enemies threatening her life.

Sammy reminds Lechero that Papo is dead and presses Lechero to kill Michael. Lechero replies that he also wants Michael dead, but he does not want an uprising in Sona.…

It's Career Week at school. As Kyle and Josh contemplate their respective futures, Jessi's quest for acceptance clashes with Kyle's need for anonymity. Meanwhile, Brian Taylor seeks parenting advice from…

When an unassuming high school chemistry teacher discovers he has a rare form of lung cancer, he decides to team up with a former student and create a top of…