A Fringe team member takes on a new role, and Walter follows leads to a key piece needed in the battle against the Observers.

Talented but cocky pilot William Adama graduates from the Academy and signs up to join the crew of the newly built Galactica. Much to his disappointment, he is assigned not to a Viper fighter but to a Raptor transport ship named Weasel. He meets his surly co-pilot Coker Fasjovik, who is cynical and interested only in leaving the military, as his tour of duty ends in a month. Coker finds Adama’s eagerness irritating. The two are briefed on their first mission together, a routine « milk run » sending cargo to the Scorpia Fleet Shipyards and returning with supplies for the Galactica. It is a four-day trip during which they are to avoid enemy contact of any kind.

While preparing the Weasel for the mission, Adama and Coker find out that their cargo isn’t supplies but a civilian software engineer, Dr. Beka Kelly. They depart, but upon leaving Galactica’s DRADIS range, Dr. Kelly hands them new orders from the Admiralty. They are to rendezvous with the Archeron, another battlestar, in an area bordering Cylon space. They are also to take all further orders from Dr. Kelly. As they travel to their destination, Dr. Kelly reveals that she worked for Graystone Industries, designing the upgrade for the Cylons’ MCP « brain » chip. When they reach the rendezvous point, they discover that the Archeron was ambushed and destroyed. A Cylon raider appears and attacks.

Sherlock tries to prove that one of the people whose body was found in the wreckage of a small plane crash was actually killed before the plane went down. Meanwhile, Watson tries to convince Sherlock to meet with his elusive father.

When the wife of a governor is raped, the governor takes the law into his own hands and then asks Olivia and her team to come in and clean up his mess. Meanwhile, both Cyrus and the President are caught off-guard when Cyrus’ husband, James, decides to return to his career as a journalist covering the White House.

Cameron watches Alex and Luke while Phil, Claire and Mitchell deal with Haley’s arrest. Jay tries to cut short a surprise visit from ex-wife Dede (Shelley Long), so she doesn’t learn about Gloria’s pregnancy.

After Detective Lance arrests Oliver for murder, Oliver tells Moira the only lawyer he’ll allow to represent him is Laurel. Laurel takes the case which puts her at odds with her father. Oliver offers to take a polygraph in front Detective Lance but things get tense when Lance asks him if anyone else was on the island with him. Oliver flashes back to when he got his first scar, courtesy of Deathstroke.

Frankie does not make a good impression on the first day of dental assistant school; Mike and Frankie ask Axl to get a tutor and improve his grades; Sue and Brick try to pawn an item they found in an old safe.

When a body is found at a sci-fi convention, Castle and Beckett are warped into the heart of fandom — a world of egotistic celebrities, diehard costumed fans and enough drama for two galaxies.

When a body is found at a sci-fi convention, Castle and Beckett are warped into the heart of fandom — a world of egotistic celebrities, diehard costumed fans and enough drama for two galaxies.