Death Uptown (Paul Whelan Series #1) in Bloomington, MN

"This series is a small treasure." —BOOKLIST
A killer terrorizes Chicago's diverse Uptown neighborhood. Private investigator Paul Whelan's specialty is tracking down missing persons, but when his good friend is found slain in an alley, Whelan is steered down a path of violence as he searches for answers.
His investigation is interrupted by the arrival of an attractive young woman, Jean Agee, who is on her own search for her missing brother. But as clues lead Whelan to believe the two cases may be connected, the body count rises quickly, and he finds himself racing to catch a killer before he strikes again.