Mark Moses is a busy man.

The recurring player on Desperate Housewives and Mad Men, who guest-starred on the most recent episode of Covert Affairs, has booked yet another high profile gig: he'll portray a key role on the season premiere of Criminal Minds.

According to TV Line, Moses will take on the character of a senator heading up a committee that is investigating a case messed up by the BAU squad.

This September 21 premiere will also mark the return of Paget Brewster as Emily Prentiss.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.