Plot summary
When a volunteer bookkeeper Frieda Merced ( Liz Larsen ) goes missing, Goren and Eames find that she was looking into the tax records of her long dead brother, Dan Feist, for his former wife, Isobel Carnicki ( Alicia Coppola ). Feist appears to have been a hitman working for criminal Jimmy Limone ( Abraham Alvarez ) who is about to be paroled. When Bennie Messina ( Tim Artz ), the prime suspect in Frieda's murder turns up dead, they focus on his associate, former detective and now Isobel's second husband, Earl Carnicki ( Terry Serpico ), as the person responsible for all the deaths.
Credits
Adapted from Wikipedia contributors, Law & Order: Criminal Intent season 3. HTML formatting and reference markers removed.