Mary's witness, Dennis Stewart, testified against another convict in a prison stabbing case. Mary gets Dennis a job in a flower shop owned by her friend Colin, an ex-biker. When Colin gets violently stabbed at work one day, however, Mary and Det. Dershowitz reluctantly begin to wonder if Dennis, despite his mild persona, might have been capable of this crime - particularly when some unexplained stabbings show up in his past. While this is going on, Jinx and Brandi receive a visitor who brings them startling news about Jinx' estranged husband.