Women Sleuths (1991) by Martin H Greenberg & Bill Pronzini

Volume 1: Women Sleuths - The Toys of Death, The Calico Dog, The Book that Squealed, The Broken Men Volume 2: Police Procedurals - The Empty Hours, The Sound of Murder, Storm in the Channel, Murder in the Dark Volume 3: Locked Room Puzzles - The Third Bullet, Booktaker, From Another World, Day of the Wizard Volume 4: Great British Detectives - The Oracle of the Dog, The cleaners, The incredible Elopement of Lord Peter Wimsey