Mary McCormack Mary Shannon Actor Frederick Weller Marshall Mann Actor Paul Ben-Victor Stan McQueen Actor Rachel Boston Detective Abigail Chaffee Actor Stephen Lang James Wiley Shannon Guest Star Tangie Ambrose Delia Parmalee Guest Star Bryan Callen Mark Stuber Guest Star Will McCormack Robert O'Conner Guest Star Aaron Ashmore Scott Griffin Guest Star Geoff Pierson Seth Mann Guest Star Steve Eastin Cormac 'Sully' Sullivan Guest Star Isabella Crovetti Young Mary Guest Star Sean McGowan Young James Guest Star Austin Rising Young Sully Guest Star Theresa Bruno AUSA Josie Potenza Guest Star Dan Lerner Director