Captain Slade Moran, US Army investigator, is hunting the killer of an officer when he rides into Grey Ridge, having lost the trail of the fugitive. Fresh orders await him at the nearby army post, and he is plunged immediately into big trouble. Seven troopers have recently deserted from the fort - an unprecedented number, and none of them have been caught. Also a young officer has been court-martialled for stealing and drummed out of the army. After examining the two cases, Moran is up against unscrupulous men, vicious killers and a rogue officer. He'll have to lay his life on the line before he can restore justice.