When Professor Hickey reveals that his estranged son (David Cross) has a baby, the gang decides to help them reunite through a game of Dungeons & Dragons.

It's Richard's birthday and Bailey invites him to scrub in on the case of a lifetime. Meredith hires a research assistant to help with her portal vein project. A scorned Callie gives Derek quite the shock. Meanwhile, Shane helps screen candidates for Cristina's clinical trial and meets a young expectant mother who needs his help.

Old feelings of abandonment resurface when Joel gets confused about where to pick up Victor; Sarah anxiously waits for a response on her final project; Amber encourages Drew to take his life back.

Leslie throws a hasty Galentine’s Day in an attempt to find a replacement for Ann. Tom and Ben look to finalize a deal on tents for the Unity Concert, while Ron finds himself looking after Andy.

A punk from the ‘80s wakes up from a coma. An e-mail goes neglected. Nina has surprising news for Lance. Malcolm and Kris tailgate a Prairie Home Companion live show. Carrie dates a tax lawyer. Guest starring Jello Biafra, Annie Clark, Jeff Goldblum, Duff McKagan and Mark Proksch.

The castle is abuzz with First Light, where the women of the castle mingle with potential suitors. Much to Mary’s dismay, Lola is reluctant to participate in the tradition. After another violent incident with the increasingly erratic King Henry, Kenna fears for her safety and confides in Queen Catherine, while Bash experiences the terrors of the woods and vows to uncover the truth behind the Darkness.

Forrest hits rock bottom after divorcing Suzanne and forcing himself to eat an unhealthy number of pancakes.

Sally sets a meeting with the NRA which sends the White House into a tailspin. Olivia and Huck come to shocking realizations and a surprising person asks for help from Pope and Associates.

Harvey faces an old rival from law school; Jessica tries to stay out of Louis and Scottie's feud.

Billy Joel performs and is interviewed. Also: Chelsea Clinton.

When Stefan tries to explain recent events to a very sick Elena, her first instinct is to call Damon. At the same time, Damon is trying to figure out how to make a disturbing confession to Elena. While going through Dr. Wes’ files, Caroline discovers a frightening secret, and is surprised when Enzo appears, claiming to have the solution everyone is searching for. At Enzo’s insistence, Caroline asks Stefan to meet her at a mysterious location where they are joined by a group of Travelers, including Sloan, who reveals new information on the importance of doppelgangers. During spring break on a mostly deserted Whitmore campus, Elena runs into Luke, a student who seems to know her, though she has no memory of meeting him. Recently dumped by his boyfriend, Luke proposes that he and Elena spend the break getting drunk together, but she sends him off on an urgent mission to find Bonnie and the “newbie” witch, Liv. Damon finally tells Elena the truth about his recent activities, and th

A meeting between two great men may pave the way for future compromise as Ragnar and Ecbert come face to face. Jarl Borg now rules Kattegat and with an iron fist and Rollo must now become the leader his people need in Ragnar's absence.