Dennis Koller’s The Oath (Pen Books, 336 pp. $14.99, paper; $4.99, Kindle) is an exciting and fast-moving mystery thriller. In November of 1966, Tom McGuire was shot down over North Vietnam and spent the next seven years as a prisoner of war, returning home in 1973 as part of the first group of POWS released.
In 2000 McGuire is a homicide detective in San Francisco when an award-winning columnist for the city’s largest newspaper, Ruth Wasserman, is murdered in an unusual manner. After being shot and killed at close-range, her arms were trussed behind her in a way that McGuire immediately realized was the manner used by the guards in that long-ago Hanoi prison.
McGuire soon recalls that Wasserman, while a writer for the Village Voice, along with a small group of female college students, had visited the Hanoi Hilton. While there, the women betrayed a handful of American prisoners who had slipped them scraps of paper with their Social Security numbers. Three of the men immediately paid the ultimate price for trying to get that info back to the U.S. government.
The investigation into the Wasserman murder soon uncovers the deaths of a few of the other women. All were found with their arms bound behind them. McGuire realizes the killer is likely a former POW now on a tour of murderous vengeance. Furthermore, it may be someone he knew back then. And why does the governor of California appear to be the next person on the list?
Ultimately, McGuire’s aggressive investigation leads to higher-ups in his department who then conspire to take him off the case. Unofficially, he continues and, with the help of a street informant, bulldozes his way through secret government hit squads and deadly Vietnamese gangs.
Koller pulls off a difficult task as he alternates chapters between those written in McGuire’s first-person voice, and third-person ones describing the unknown perpetrator known as “the man.”
Throughout the story the reader is forced to think about the point at which a person with antiwar views becomes a traitor. But Koller also makes you aware of the unintentional war-time bombing of civilian areas and to consider what constitutes an “immoral” military order. There’s the legacy of the My Lai massacre.
The book is divided into sixty short chapters. Just past the half-way point the story begins racing, literally against the clock, toward a satisfying climax. Some might see the book as pulp-ish wish-fulfillment tale. I didn’t.
For me, The Oath worked well as a straightforward thriller. And it kept my interest throughout.
The author’s website is denniskoller.com