With motive and ingenuity and daring, the sleuths in these fifteen mystery stories - by some of the genre's finest writers - penetrate the secret realm of the medical profession. In Dorothy Sayers' "The Footsteps that Ran", for example, Lord Peter Wimsey uses what the doctor tells him; "Dr. Coffee and the Other Twin" stars a pathologist who is just the person to have on hand in a murder involving twins; and in "M Is for Mayo" by William Pomidor murder stops a hospital staff picnic cold.