There's no getting around it: We have to start with the blurb, which is a great joke, at least to us, because we know that Evan Hunter, in addition to being a few other people, is also Richard Marsten. I don't know if it was his idea to blurb his own book or if someone at Gold Medal came up with it, but I like it.
In the opening chapter of the novel, a naval enlisted man kills a nurse. We see the events from the point of view of the killer, as we do in several chapters later on, but we don't know his name. The captain of the destroyer on which the murder occurs appoints a board of inquiry, and the FBI is called in. The leader of FBI duo just wants to get things over with, and so does the captain. When the killer strikes again, the blame for the first crime is pinned on the victim, who's judged a suicide. Everybody's happy except Chuck Masters, who's on the board. Nobody wants Masters to investigate further, but he does, of course.
There are plenty of familiar elements here, but Marsten handles them all expertly. The conclusion is typically '50s ("you poor girl"), but, hey, the book was written in the '50s. What would you expect? And if you want "superb suspense," Marsten's your man. Would Evan Hunter lie to you?