Max Martini is prepared to stir things up on Covert Affairs Season 5.

The veteran actor (Crisis, Revenge, The Unit) will stop by an episode of this USA Network hit this summer, coming on board as Nathan Mueller, an ex-CIA operative who disappeared mysteriously and then suddenly resurfaces.

Look for him and Annie to bond over their shared troubled histories.

Martini joins previously-confirmed Covert Affairs guest stars Perrey Reeves, Nazneen Contractor, Amy Jo Johnson and Michael A. Goorjian.

Need to catch up? Go watch Covert Affairs online.

Want a preview of what's to come? Check out the following exclusive interviews:

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