Mark Moses knows shady.
The actor has appeared on Desperate Housewives since 2004 in the role of ex-convict Paul Young and will soon take a similar persona over to USA. EW reports that Moses will guest star on Covert Affairs this summer as the suspect in a CIA investigation.
Look for the veteran actor to come on board as an astronaut who never made it to space. He'll show up in one of the series' first episodes of the new season, which kicks off on June 7.