The discovery of four corpses in a London basement releases a trail of suspicion and expectation. Are the three women and one man the remains of Toten Herzen? The four members of Toten Herzen disagree.

Rob Wallet, still searching for answers to the disappearance of Peter Miles, is drawn to Sigmaringen and a series of local killings which may or may not be the work of a werewolf. His investigation is distracted by Toten Herzen's unauthorised biographer, Raven's gaggle of hapless friends, and a local couple's insistence they own a car that once belonged to Adolf Hitler.

Susan Bekker finalises the soundtrack of Quarter Moon by teaming up with an accident prone conductor, a tight fisted folk musician and an overpowering cellist. Surrounded by sponsorship deals and lucrative endorsements she begins to calculate her own worth and how to exploit it.

But the wall of a London basement is not the only barrier to unsolved mysteries as Frieda's circus in Luxembourg conceals a deadly secret of its own and Wallet's old house becomes the centre of attention and throws the most telling suspicion yet on his motives for bringing Toten Herzen back from the dead.