Sheila Tousey

Upon receiving reports of missing persons at Fort Spencer, a remote Army outpost on the Western frontier, Capt. John Boyd investigates. After arriving at his new post, Boyd and his regiment aid a wounded frontiersman who recounts a horrifying tale of a wagon train murdered by its supposed guide – a vicious U.S. Army colonel gone rogue. 

An FBI man with Sioux background is sent to a reservation to help with a murder investigation, where he has to come to terms with his heritage.