Boxer, Beetle by Ned Beauman

Set against the backdrop of 1930s England, this novel intertwines two seemingly disparate narratives: the life of a nine-toed Jewish boxer named Seth "Sinner" Roach and the modern-day quest of a collector named Kevin "Fishy" Broom. As Fishy delves into the past to uncover the secrets of a rare beetle specimen, he unravels a dark tale of eugenics, obsession, and betrayal that connects the lives of Roach and a fascist entomologist named Philip Erskine. The story deftly explores themes of identity, ambition, and the unsettling intersections of science and ideology, all while maintaining a sharp, satirical edge.