Topher races to reconstruct Echo's original personality and memories when Adelle realizes they are the key to averting a devastating future. Meanwhile, Echo and Bennett's shared past and the identity of The Rossum Corporation's mysterious leader are revealed.

When Adelle, Boyd, and the rest of the Dollhouse fear that Echo's uncontrollable mind imprints are making her a danger to their goals, they send her to "the Attic" where Echo is forced to face her worst nightmare in order to survive.

Sierra is forced to face her past as her connection to the Rossum Corporation leads to obsession and murder.

In the year 2020, Echo and her surviving Dollhouse crew attempt to restore order to a devastating future world before mankind is eliminated.

Sacrifices are made when Echo leads her crew to Arizona to dismantle the Rossum Corporation's mainframe.

Ballard’s investigation leads him to the agoraphobic designer of the Dollhouse (guest star Alan Tudyk), and the story of “Sleeping Beauty” foreshadows Echo’s future, while allowing her to help a young girl deal with her traumatic past. Adelle goes to the attic in search of answers, while Alpha reveals himself and sets his game in motion.

When Senator Perrin makes his stand against the Rossum Corporation, Echo attempts to stop his expose. Adelle, and Topher begin to see what they are up against in the rival of Washington DC.

Alpha’s reign of terror continues as his obsession with Echo endangers Caroline’s survival. Ballard’s search for the Dollhouse comes to an end, forcing him to make a life-changing decision. Meanwhile, one Doll is permanently deactivated while another’s shocking past is revealed.

Echo is imprinted with the personality of a mother with a newborn baby. Complications arise when, thanks to Topher's programming, Echo takes too strongly to motherhood. Perrin ramps up his investigation into Rossum and DeWitt pays November a visit.

Echo becomes a backup singer to watch out for a female singing sensation with a very overzealous fan. Agent Ballard's investigation takes a turn for the worse.

Echo is one of the "Actives" in the elite and illegal Dollhouse. Through different personality downloads, she plays the role of a lovestruck girl on a romantic weekend, and then a ruthlessly efficient kidnapping negotiator. FBI Agent Paul Ballard is struggling with his assignment to uncover information on the Dollhouse.

Imprinted as a visually impaired woman, Echo must infiltrate a heavily guarded cult in order to rescue a woman held against her will.

Echo becomes an expert safe-cracker, and an invaluable piece of art is stolen from her on the engagement, forcing Sierra to take on a familiar persona. Agent Ballard gives Lubov an ultimatum, and Adelle confides shocking information to Topher.

Echo and Victor’s imprints collide when Echo is sent on an assignment as a fun-loving, seductive college student and Victor is imprinted as the psychotic nephew of a Dollhouse shareholder.

Echo becomes the female counterpart to an outdoorsman; Agent Ballard is encouraged when he receives a clue to Echo's true identity.

It has been several months since Alpha's reign of terror and Echo, who is now randomly picking up flashes of past engagements, weds a British businessman who has ties to one of Ballard's open FBI cases. Topher becomes the target of Dr. Saunder's aggression after she finds out that she is actually a doll named Whiskey. Boyd takes on a risky venture and mixes business with pleasure, while DeWitt makes Ballard an irresistible offer.