[In "King's Ransom"] here am I once more saying, "McBain has done it again."

Praise of a consistently admirable performer must get monotonous and even boring. If you're tired of reading here about McBain, the best remedy is simply to drop this paper and start in reading the book itself. This one's about a kidnaping, with quite a number of fresh variations on the Big Snatch theme. It's as immediate and convincing as any of the 87th precinct tales, and a little more (in the best sense) theatrical than most. The book is powerful and compelling; and one looks forward to a dramatic version that might be even more so.

Anthony Boucher, in a review of "King's Ransom," in The New York Times Book Review, December 6, 1959, p. 42.