An excellent cat-and-mouse spy thriller that won the Edgar Award for best mystery in 1976. It features the authenticity, cynicism, and world-weariness of many Seventies thrillers, similar to Six Days of the Condor by James Grady and The Day of the Jackal by Frederick Forsyth. But it's also economical, suspenseful, and precisely written, the work of an old pro. By the time Hopscotch had come out, Garfield had been writing fiction for nearly four decades.
Like Elmore Leonard, Garfield started out writing Westerns, and he gravitated to crime novels later after the market for Westerns cooled. His 1972 novel Death Wish became a hit movie starring Charles Bronson, making Garfield suddenly famous. Hopscotch came out in 1975, and Garfield had switched it up again, moving from the crime genre to the spy thriller. Garfield certainly proved his versatility many times over.
Hopscotch is about a 53-year-old CIA field agent named Miles Kendig who is forced into retirement. He's bored and adrift, but he conceives of a spy game to play with his former peers in the intelligence business. He proceeds to write an expose of CIA dirty work, and begins sending chapters to 15 international publishers. Both the CIA and KGB fear the public exposure of their covert activities, including assassinations, and desperately want to stop Kendig from publishing his memoir, so the game could cost Kendig his life. But the danger doesn't faze him; he needs this cat-and-mouse game simply to prove his competence and professionalism. When it's over, he'll decide what to do with the rest of his life.
It's a slim book, only 205 pages, so Garfield demonstrates his exceptional narrative skills in a very tight package. The novel is fast-paced, takes readers to several European cities, demonstrates fascinating knowledge of skills employed in covert intelligence, and develops some interesting characters along the way, including Cutter, Kendig's talented former colleague who is tasked with finding him. Readers pull for Kendig because he's a likable underdog with a gentle approach to field work; he relies on his wits and avoids violence whenever possible.
The book was adapted into a lighthearted 1980 movie starring Walter Matthau as Kendig and Glenda Jackson as his love interest Isobel, a character added to spice up the movie. Garfield was both associate producer and co-screenwriter (with Bryan Forbes) on the movie, and it's one of those rare cases where the movie is as good as the book.
P.S. The book and movie both feature a delightfully non technical method that Kendig used to scrub his photo from CIA files, thereby making himself more difficult to identify. Not computer files, but actual physical files stored in a filing cabinet. Life was so much simpler then.