TV Line reports that Ignacio Serricchio and Benito Martinez will both appear in the new run's second episode.
Privileged star Serricchio will play an Italian secret agent who is intended to be exchanged for a captured CIA operative. He previously featured in a recurring role on Ghost Whisperer and also appeared on ABC soap opera General Hospital from 2004 to 2008.
Martinez will appear as the deputy director of Argentine Military Intelligence, who has a past relationship with Joan (Kari Matchett). The relationship between the pair will be damaged when the exchange of agents goes wrong.
The actor's past television credits include playing David Aceveda on The Shield and recurring roles on 24 and Saving Grace.
Former Neighbours star Ben Lawson and Heroes actress Rena Sofer also recently signed up to appear in the second season of Covert Affairs.
The series is expected to return to USA on June 7.
> USA renews Covert Affairs