Fred and Carrie become dangerously obsessed with Battlestar Galactica.
As Carter and Blake prepare a Christmas surprise for the kids, a wave of energy sweeps over Eureka, transforming everyone into animated characters.
The mirror-match continues. Travis enlists some new acolytes. Miami Metro gets two new breaks. Dexter finds himself in hot water, confused about what to do with Wormwood.
Dexter tries to stay one step ahead of the Homicide Division concerning the Doomsday Killers, while he finds help from an unlikely source; Debra uncovers something unexpected about herself during her therapy sessions.moreless
Dexter, using what he's learned from Brother Sam, comes a step closer to the Doomsday killers, specifically Travis; Deb and LaGuerta go head-to-head after a call girl ends up dead.
Miami Metro gets closer to Gellar and Travis thanks to the new intern. Meanwhile Dexter deals with faces from the past. Travis tries to move on from Gellar.
Dexter investigates who shot Brother Sam. Meanwhile, Homicide interrogates the woman who Quinn slept with who is involved in the Doomsday Killer case.
With the help of his newfound friend Brother Sam, Dexter wonders if there is light within him to counter the darkness, while the search for the Doomsday Killers takes him in a new direction; Batista and Quinn pay a visit to the university where Professor Gellar taught; due to departmental regulations following the shooting, Debra is forced to begin therapy.moreless
The team investigates murders that have a religious undertone to them.
Dexter faces a serial killer from his past; Debra has problems with her new position and Travis with Gellar think of their next move.
In order to solve the mysterious murders, Homicide asks for the help of Brother Sam, who Dexter knows used to be a serial killer. Debra has two proposals, one personal and one job-related.moreless
Dexter uses his 20 year high school reunion as a chance to hunt the prom king. It's going fine until he is called to the scene of a vicious faith-based murder leaving him with questions about what he wants to pass on to Harrison. Debra who is finally in a good place with her relationship with Quinn and her job becomes an unexpected hero.
With Galactica on the verge of falling apart, Admiral Adama readies the ship for what could be its final mission, as Baltar's Six warns that humanity's final chapter is near.