In the humid dog days of a Pittsburgh summer weekend, Richard Christie, Head of Homicide, faces not one, but two mysterious murders. The victims---a polite woman and an angelic child---do not seem to be connected in any obvious way. Christie is short-handed, the clues don't stack up, and he's got a rookie detective, Colleen Greer, to look out for. These are his problems. Colleen has problems, too. Her boyfriend is trying to break up with her, she's...