Tahmoh Penikett, Fran Kranz, Dichen Lachman and Enver Gjokaj have joined Joss Whedon's new TV series "Dollhouse" says The Hollywood Reporter.

The four join Eliza Dushku on the 20th Century Fox TV-produced drama, which received a seven-episode order shortly before the strike.

The seven-episode Fox TV-produced drama revolves around a group of young men and women, aka "Dolls," who are imprinted with different personalities for different assignments.

They have no memories of their previous lives, until Echo (Dushku) begins to try to find out who she was.

Penikett will play Paul Smith, an FBI field agent obsessed with the urban myth of Dollhouse and a twisted romantic foil for Echo.

Kranz will play Topher Brink, a twentysomething genius programr responsible for imprinting the dolls.

Lachman will play Sierra, a doll like Echo and her friend, who has every personality in the world but her own.

Gjokaj will play Victor, also a doll and a friend of Echo's, who is childlike when he's inactive, and everything from Errol Flynn to young DeNiro when he's active.