James Henry is doing a marvelous job recreating Wingfield’s Frost character. This is Henry’s third so far, I believe, and is excellent. All are prequels and in this one Frost has just lost his wife Mary to cancer. Frost is still a sergeant, but Mullett is under pressure from the ACC to promote Frost to Inspector. Waters and Frost become friends and we see the origins of the Clark/Frost relationship. Frost is humanized - a bit. Read very well by Stephen Thorne.
The title is, of course, a pun.