Episode Detail: Dial 'O' for Murder - Hack
A young woman is found raped and strangled to death in the park, and the only clue police have to her identity turns out to be Mike's phone number written on her hand. Although Mike doesn't know who the victim is, he's sure Liz (Jacqueline Torres) does because she was the one who told the troubled girl how to contact him for help. Meanwhile, Marcellus suspects the murder is linked to a similar unsolved crime from two years ago. Sgt. Rossi: Paul Adelstein. Skeeter D: J.D. Jackson.