'Invasion' star joins 'Prison Break' cast

Invasion star William Fichtner (Sheriff Tom Underlay) has joined the cast of Prison Break.

The actor will feature prominently in the show's upcoming second season, playing the federal agent tasked with hunting down the newly-escaped prisoners.

Filming on the second season - currently underway in Dallas, Texas - was delayed by a day until Fichtner's deal was signed, Reuters reports. He has just wrapped production on comedy film Blades of Glory.