When a multi-million dollar diamond heist leaves two murdered victims in its wake -- along with the body of one of the slain robbers -- curious Detectives Goren (Vincent D'Onofrio) and Eames (Kathryn Erbe) chase down blind alleys, unaware that their quarry is a cold-blooded and manipulative master criminal (guest star Jake Weber). Eventually, the cops suspect that their killer has imposed his girlfriend (guest star Michelle Hicks) on his gang and ponder if the murderous thieves have a mob connection that would permit them to quickly cash in on such a large haul of stones. Jamey Sheridan and Courtney B. Vance also star.