Ally is performing at an awards show but the producers are worried about her dancing abilities.
As promised, Marco Pierre White has returned to see how far the contestants have come and to push them to step up going into finals week.
With a small group of survivors from Solace in tow, Chandler and his crew square off against an enemy of the most dangerous kind - a nuclear-powered submarine led by rogue British naval officers, Sean and Ned Ramsey. XO Slattery interrogates a captured mercenary from the hospital ship in an effort to extract information on the sub and its mission. As Nathan James engages in a perilous game of cat-and- mouse, the truth about the mercenary sub unfolds.
Gordon and Donna are keeping secrets from one another. Gordon sets up a new venture.
Killer Synth is the breaking news story, and public panic is growing. Karen is hot on Niska's tail, but are her motives for finding her more personal than professional?
Eph and Nora work on a biological weapon to kill the strigoi, and Setrakian risks the lives of the entire group to find information about a closely guarded secret text. The Master begins the next phase of his own plan, by creating a terrifying new breed of creature and placing them under the control of Kelly.
The detail works a pawn-shop lead to close in on a suspect in the Caspere case. Frank revisits his past to pay for his present. Velcoro, Bezzerides and Woodrugh struggle to keep the case straight in the face of corruption.
The 2nd Mass discovers the source for the seemingly endless supply of enemy forces. Hal disobeys his father.
When Cyd and Shelby are having trouble studying for a difficult history test, they decide to jump ahead in time and nab the test questions. Meanwhile, Barry and Naldo find themselves in a hair-raising situation when they try to figure out how to make Barry’s invention replicate time travel.
Sunlight returns to the Arctic National Wildlife Refuge in the Season 1 finale, but Heimo is still stunned by a blast of extreme cold. Meanwhile, the Seldens move into a new cabin; and Bob mulls his future after his worst season in 40 years.
A Texas mother is sentenced to death after being convicted of murdering her two young sons in their Dallas-area home.
See how the eruption of Mount Vesuvius produced a 2,000-year-old Roman soldier mummy and a baffling mystery.
K.C. goes even deeper undercover into The Other Side’s training ground and is close to getting the intel she needs, when she discovers Brett is her new training officer.
Drift returns to Earth in pursuit of a disgruntled, runaway Jetstorm. Meanwhile, Springload and Quillfire make an escape.
When the mysterious Tantabus escapes Princess Luna’s dreams, the Princess must find a way to stop it before it turns everypony's dreams into nightmares.
Ghost and Tommy work to sell all of the product in time to pay Lobos, unaware that Holly is being questioned by the FBI. With every passing hour, Angela grows closer to the truth.