EW reports Alan Dale -- aka Charles Widmore, a one-time inhabitant of the Island and Ben Linus' nemesis -- will guest star as a former member of the German Stasi secret police. Look for Dale to appear in the eighth episode of the drama series.
Michael Emerson and Jim Caviezel star in the new action show.
In other casting news ...
'Cash Cab' host Ben Bailey has a new Discovery gig. Bailey will host 'Best in the Business' a new competition series that puts everyday workers against one another to see who is the best at their craft. The show premieres Wed., Nov. 23 at 10PM ET. [TV Guide]
'True Blood' star Carrie Preston is sinking her teeth into 'Law & Order: SVU.' Preston will play the aunt of a rape victim in a November episode. 'American Pie' actress Natasha Lyone will play Preston's niece. Timothy Busfield and Izabella Miko will also guest star in a future episode. [Wolf Films]
Alyssa Milano and Brent Spiner are lending their voices to 'Young Justice.' Spiner will voice Joker and the 'Charmed' star will play Poison Ivy. [TV Guide]
Jason Behr is back! The 'Roswell' star has booked a potentially recurring role on A&E's 'Breakout Kings.' Behr will play Darius, a convicted rapist and murderer who escapes from prison. He'll appear in the Season 2 premiere. [TVLine]