Ninjas face up to 10 obstacles, including the new head-spinning Corkscrew and mechanical Clockwork, plus fan favorites such as the Salmon Ladder and the Warped Wall. Ninjas include Daniel Gil, Jesse Labreck, Sandy Zimmerman, Jody Avila, and Grant McCartney.

With only 5 All Stars remaining, a pumpkin patch battle began. Who will carve out a victory? And which houseguest will jack-o'-land on the block?.

Magicians Jandro, David Parr, Magical Katrina, and Daniel Roy try to fool the veteran duo with their illusions.

Twelve celebrity and pro-dancer couples compete for the fifth week of the competition.

Guest: comedian Jeff Davis.
Games played: World's Worst, Doo-Wop, Newsflash, Scenes from a Hat, Greatest Hits.

As the islanders prepare for a fateful birth, Helen reveals her true intentions in coming to Osea and, after joining a search party, is pressed on her past. A peculiar girl befriends Ellie and offers to take her to a mysterious place closed off to outsiders.

As the power struggle between Sarah and Richard escalates, the relationship between their wives continues to grow, and Sarah fuels the fire by spending time with Caitlin on the base's virtual shooting range. Later, Caitlin asks Fraser for help making a bold statement; Danny questions Jenny about his biological father as he dives deeper into Islam; and Fraser forms his own connection with Jonathan.

Soul mates David and Alison start an affair, but not everything is as it seems.

Racked with guilt, Dani is haunted by her own heartbreaking loss. Flora and Miles find ways to cope, and Bly's staff remember the dead over a bonfire.

The kids investigate whether the taxi driver is part of the larger mystery-and whether the poem's locations have a hidden meaning.

The hunt is on for Dr. Emilia, and friends start to vanish. It'll take teamwork to make Kipo's dream of a Human Mute Ultimate Friendship Alliance work.

It's Chocolate Week and the bakers tackle a deceptively simple traybake signature, a technical packed full of chocolate and nuts, and a white chocolate celebration showstopper.

David investigates Kelly's past, Hannah is drawn to Andy, Gail confronts Henry with her feelings, and Belle's ex-husband comes back into the picture.