Cosmopath (Bengal Station Series #3)

Necropath Jeff Vaughan is sent to investigate the disappearance of a crew on Canopus VII, where he discovers an underground city and a new alien race.

Having been sent to Canopus VII to find out what happened to a lost crew, Necropath Jeff Vaughan finds himself drawn into a deepening mystery not only as to the fate of the crew but also the intentions of his benefactor.