All the Gil “The Arm” Hamilton stories collected in one volume with a previously unpublished story. These are good SciFi murder mysteries set in the Known Space universe. It just goes to show that Niven has a devious mind. As he says himself, SciFi murder stories are tricky since the reader must know all the “rules” of the environment in order to have a shot at solving the mystery himself.
Note: Most of the stories were previously published in “The Long Arm of Gil Hamilton”.