The One From The Other by Phillip Kerr
Bernard Gunthar is back. The Russians and the Americans have divided up the former territory of the Reich. Jewish death squads from Haganah are hunting former Nazis, but there are many still in hiding and an underground railroad spiriting them away by way of the priesthood. There are villains aplenty here and Gunthar runs afoul of most of them.
Better for its setting and tone than its improbable plot, The One From the Other is still good gumshoe fiction. Gunthar meets dames, wisetalks authorities, trades punches and pistol shots with Nazi’s, CIA, thugs, and more!