Athletes and everyday people compete for a chance to take on the World's Most Difficult Obstacle Course.

Athletes and everyday people compete for a chance to take on the World's Most Difficult Obstacle Course.

As high school graduation nears, Logan finally decides on which college he will attend. Meanwhile, Kody and the wives are on the verge of fulfilling their dream of bringing the family back together.

Kody and the Wives speak to NBC News' Natalie Morales about polygamy, life in Las Vegas, and their new book detailing life in the Brown family before the cameras started rolling. In addition, Natalie also sits down with five of the Brown's oldest kids.

The family's Dominican Republic vacation gets off to a rocky start when Kourtney causes herself, Kim, and Scott to miss their flight. Meanwhile, Bruce and Scott can't resolve their differences

Bill and Eric negotiate with the Vampire Authority to allow them to keep their lives. Jason meets up with a former high school teacher. Sookie goes looking for Tara.

The producer of a reality makeover show is sued; Parker is shocked when his son appears at the firm; Teri helps Stacy open her new business; Grayson and Owen get competitive in basketball and love.

The dead body of a naked woman leads Jim and Carlos to investigate a close­ knit nudist colony fighting against expansion by a luxury condo development. Jennifer begins interviewing the substation employees and finds its high case closure rate seems directly related to Jim, in whom she takes an interest that may be more than just professional.

The unit moves into an airport hanger, but the relocation could cause health problems. Elsewhere, the renegade Berserkers scheme to cast out Tom; the unit copes with a loss; an enigmatic visitor provides hope.

Kagame's return begins with a reset of Liber8's agenda, away from violence and towards blending into the community and fostering their revolution through co-opting existing structures. But they have a vulnerability - the possibility that if their ancestors, living in this time, are murdered, they might cease to exist. A test of this theory is devised and Kiera and her grandmother are the guinea pigs.

The biggest storm of the season hits the Haul Road. A trailer malfunction leaves Jack Jessee in danger of getting stranded as the brutal weather closes in. Darrell tries to push through the blinding whiteout, and Porkchop visits the boss to answer for career-ending mistakes. Eager rookie Austin Wheeler is free of former mentor Jack Jessee, but in the brutal winter conditions, his impatient actions threaten to shut down the haul road. In Manitoba, Canada, Hugh and Rick take on their second load of the season, transporting vital water tanks to the remote community of St. Theresa Point. But getting to the remote village means crossing a newly opened section of the winter roads, and taking their heavy loads across untested ice.

Claudia joy has a close call before recovering from surgery; David could get in big trouble for communicating with his father with out Joan and Roland knowing about it. Gloria and Hector continual arguing over whether she should even have a job at the hump bar, leading her husband to make a bad decision. Two army wives may regret taking a beach vacation.

Popular "News Night" anchor Will McAvoy returns to work after a public meltdown to find most of his staff has jumped ship, but new hires help steer the show when news of a catastrophe breaks in the spring of 2010.

A fisherman discovers the bodies of two murder victims, including a teen from the Cheyenne reservation.

Eric Andre and Hannibal Burress were joined by Sinbad.

The guys spend time on a sub without women, and the conditions quickly deteriorate, prompting Pickles and Nathan to compete for the affections of their producer.

The bottom three contestants from the Invention Test must now cook for their lives in the Elimination Challenge, with Christine Manfield's classic smoked trout.

Finn and Jake are called to solve a Candy Kingdom hostage crisis when a rogue cookie takes over.