Henry Ian Cusick Henry Ian Cusick

Body of Proof's Megan Hunt (Dana Delany) is always trying to get into the heads of her victims, and now she's will have some help getting in the mind of her suspects.

The ABC procedural has tapped Lost grad Henry Ian Cusick to guest-star, TVGuide.com has confirmed. As first reported by ShaneSSaunders.com, he will play a therapist who has patients that Megan and detective Tommy (new cast member Mark Valley) are watching closely while investigating a homicide. Check out a sneak peek at Cusick's role here, courtesy of the episode's writer, Corey Miller.

First Look: Mark Valley joins Body of Proof

Cusick, who is best known for playing Desmond on the island drama, starred on the first season of Scandal before departing in the spring. He also guest-starred as Simon in Fringe's flash-forward episode last season.

Body of Proof is set to return with new episodes sometime this midseason on ABC.