Barney becomes fixated on having his rehearsal dinner at a laser tag arena, much to Robin's dismay. Meanwhile, Ted doesn't come through on a promise, which aggravates Lily. (TV-14 D)
Marshall tries to get Marvin to sleep by reciting three rhyming bedtime tales about his friends as they wind down their epic cross-country journey. James Van Der Beek and Lin-Manuel Miranda guest star. (TV-14 D, L)
When Barney's father arrives at the hotel, Barney devises a plan that makes Robin very nervous. Meanwhile, Ted is convinced someone framed him by messing up a wedding-related duty. John Lithgow, Frances Conroy and Wayne Brady guest star. (TV-14 D, L)
In a flashback episode, the gang ponders the future of the Ted, Robin and Barney love triangle. Meanwhile, Barney accepts a series of challenges from Lily and Robin. (TV-14 D, L)
When Robin and Loretta's conflict escalates, Barney is caught in the middle. Meanwhile, Marshall and Daphne deal with a stowaway on their road trip, and Ted and Cassie try to enjoy a trip to a lighthouse. (TV-14 D, L)
Season 6, Episode 12 (False Positive): Lily and Marshall receive shocking news that prompts the gang to reflect on their own lives, Robin gets a new job, and Ted begins carrying out tasks as Punchy's best man.
Season 6, Episode 11 (The Mermaid Theory): Ted befriends "The Captain," Zoey's husband, and invites him to hang out with him and Zoey, hoping they can all be friends.
Season 6, Episode 10 (Blitzgiving): Ted spends Thanksgiving with Zoey after his plans to make dinner for his friends are foiled when they spend the night with a college friend, "The Blitz," who brings bad luck wherever he goes.
Season 6, Episode 9 (Glitter): The friends encourage Robin to reunite with her former costar, Jessica Glitter.
Season 6, Episode 8 (Natural History): Ted meets Zoey's husband, the Captain (Kyle MacLachlan), when the gang goes to a fund-raiser at the Natural History Museum.