The Day After Tomorrow (1994) is a thriller novel by Allan Folsom which appeared in the number 3 spot in its first week on the New York Times bestseller list for fiction.
[3] Paul Osborn sees the man who has murdered his father years before while sitting in a cafe, in Paris, and assaults him.
Detective McVey comes to Paris in order to meet some experts on the case of a couple of decapitations, where the bodies and heads were found deep-frozen.
A few days later Osborn tries to kill Kanarack, torturing him with Suxamethonium chloride, but when he's nearly dead a third person enters the scene.
Because of that McVey and his investigation team have a suspicion that Scholl and his people might belong to an organization that's working on surgery making it possible to combine deep-frozen body parts and to thaw it so the person is alive.