- Robert Blanche as Franco (7/22 episodes)
- Christian Lagadec as Renard's Confidant (7/22 episodes)
- Danny Bruno as Bud (6/22 episodes)
- James Frain as Eric Renard (6/22 episodes)
- Mary McDonald-Lewis as Frau Pech (4/22 episodes)
- Sharon Sachs as Harper (4/22 episodes)
- Shohreh Aghdashloo as Stefania Vaduva Popescu (3/22 episodes)
- Bertila Damas as Pilar (3/22 episodes)
- Michael Grant Terry as Ryan Smulson (3/22 episodes)
- Reg E. Cathey as Baron Samedi (2/22 episodes)
- Mary Elizabeth Mastrantonio as Kelly Burkhardt (2/22 episodes)
- Jessica Tuck as Catherine Schade (2/22 episodes)
- Lisa Vidal as Lauren Castro (2/22 episodes)
- Mike Dopud as Marnassier (2/22 episodes)
- Jessen Noviello as David Esquibel (2/22 episodes)
- Jim Crino as Leroy Estes (2/22 episodes)
- Robert Alan Barnett as Matthew (2/22 episodes)
- Timothy Whitcomb as Al the Tow Truck Driver (2/22 episodes)
- Jenny McShane as Lilly O'Hara (2/22 episodes)
- Michael Agostini as Carter (2/22 episodes)
- Luke King as Lucas (2/22 episodes)
- Kamyar Jahan as Miguel (2/22 episodes)
- Jean-Luc Boucherot as Yanko (2/22 episodes)
- Tabor Helton as Augustin Katt (2/22 episodes)
- Glen Baggerly as Lead Officer (2/22 episodes)
- Tony Calvino as Officer (2/22 episodes)
- Rick Walters as SERT #2 (2/22 episodes)
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