VIDEO: Sneak Peek - 'The Final Page' Episode of CBS's HOW I MET YOUR MOTHER

On the next episode of the CBS comedy HOW I MET YOUR MOTHER titled 'The Final Page, Part One And Two,' with Christmas fast approaching, Barney tells Ted that he plans on proposing to Patrice, which leads Ted to debate whether or not to tell Robin. Meanwhile, Marshall and Lily run into an acquaintance from college. The special one-hour episode airs Monday, Dec. 17 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Get a sneak peek below!

Seth Green (“Buffy the Vampire Slayer”) guest stars as Daryl LaCorte, Marshall and Lily’s acquaintance in college, and Peter Gallagher (“The OC”) guest stars as Ted’s former architecture professor.

HOW I MET YOUR MOTHER is a comedy about Ted and how he fell in love. It all started when Ted's best friend, aspiring environmental lawyer Marshall, proposed to his college sweetheart, Lily, a kindergarten teacher. Now that the two have had a baby, Ted realizes that he had better get a move on it if he too hopes to find true love. Helping him in his quest to find his future wife is Barney, a friend with endless, sometimes outrageous opinions, a penchant for suits and a foolproof way to meet women. When Ted meets Robin, he's sure it's love at first sight, but after a whirlwind romance with her, he realizes destiny has something else in store for him. The series is narrated through flashbacks from the future.