The diner gang helps Max and Caroline bake throughout the night in order to fulfill a gigantic cupcake order.

After Hodgins and Angela are drugged and wake up to a bloody corpse hanging in the canopy of their bed and flower petals around their son Michael's crib, they are forced to believe that Pelant is back for revenge against Hodgins. Although Hodgins wants to go after Pelant directly, Booth knows it's best to work within the system and not go against protocol. Meanwhile, as the Jeffersonian team investigates the corpse, they discover the victim was a Special Forces agent working for the world's biggest supplier of mercenaries, and Angela and Hodgins decide to start an investigation without the rest of the Jeffersonian team for the sake of their family.

When Beau Randolf, the founder of hit adult video franchise "College Girls Gone Crazy," is murdered, Castle and Beckett are confronted with a lengthy list of husbands, fathers and ex-college girls who all have motive. So to find the killer, they must delve deep into the victim’s life, where they find surprises at every turn. Also Alexis starts a video blog, but Castle is not happy that personal and intimate details about her life are being made public.

Muscle Man tries not to contact Starla for an entire weekend.

Sean takes the ladies to Malibu for a game of beach volleyball, after which the winners spend the evening with him and the losers return to the mansion. Elsewhere, one of his romantic encounters has the potential to break a world record for the longest on-screen kiss. Thirteen women remain after the rose ceremony.

The contestants are on their own this week when trainers Bob, Jillian and Dolvett leave town to surprise kid participants Biingo, Lindsay and Sunny and their families with a visit to their hometowns. Some players struggle without their trainer, but others rise to the occasion, and an unexpected leader emerges. In honor of this week’s "Pay it Forward" theme, contestants run a 5K and money is donated to a local Boys and Girls Club, with the winning team earning $15,000 to split among themselves. The trainers plan special surprises for each kid in their hometown before returning to the ranch in time for last chance workouts, when Jillian has a run-in with a player on another trainer’s team. Later, the weigh-in brings welcome news to one player who has been struggling, before another player is sent home.

Obama launches the Presidential Pride Parade, Kate Middleton contaminates America, and Ta-Nehisi Coates reflects on Obama's second inauguration.

Former FBI agent Ryan Hardy is drawn out of retirement when serial killer Joe Carroll escapes from prison; the investigation reveals that Carroll has a cult following.