Missing Witness — Stephen Penner

A man shot to death under a freeway overpass. A suspect who flees into the night. And a witness no one can find. Homicide D.A. David Brunelle must figure out the connection between these three people in order to hold a murderer responsible. But how can he, when he has no idea who the witness really is or how to find her? To prevail against a theatrical defense attorney, and win over a dubious judge, Brunelle enlists the help of his usual allies, plus a newbie prosecutor and a mysterious woman who seems to know everyone -- except the missing witness. It will take all of his abilities to put the pieces together in time to solve the puzzle and convict a killer.