Former Dollhouse Season 1 DVD Box set star Amy Acker will appear in the season finale of Human Target, Mark Valley has confirmed.

The actress, who played Dr Claire Saunders on the Joss Whedon series, will play a face from Christopher Chance's past.

Discussing the episode,Valley told reporters during a conference call: "Baptiste comes back, and Amy Acker shows up and plays this one character who's very pivotal in Chance's past - she was the catalyst for him becoming Christopher Chance."

He added: "Lee Majors is in that episode too - there's a couple of major confrontations there. Dollhouse Season 1 DVD Box setJackie Earle Haley and I have our first fight even though it takes place in the past. You can see the roots of their relationship and why they have such a trusting bond."

Human Target continues tonight at 8pm on Fox.