Scandal Swears In Ugly Betty's Eric Mabius

Olivia Pope & Associates' client list is quickly turning A-list on Scandal.

Following news of Lisa Edelstein's upcoming appearance, Ugly Betty alum Eric Mabius has been tapped for a guest spot on the ABC political drama, TVGuide.com has confirmed.

Scandal seduces House's Lisa Edelstein for guest spot

As first reported by Mabius will play Sen. Peter Caldwell, a member of a powerful political family who seeks advice from Olivia (Kerry Washington), according to The Hollywood Reporter, which first reported the news. He will first appear on the Feb. 21 episode titled "Boom Goes the Dynamite".

Mabius, 41, most recently played a political journalist on USA's Political Animals and will also guest-star on the Feb. 22 episode of Blue Bloods.

Scandal airs Thursdays at 10/9c on ABC.