Coroner John de Wolfe, already familiar to readers from the novel “Asylum Seeker,” is again faced with a mysterious murder. Investigating it, John unwittingly finds himself privy to some terrible secret, kept for many centuries by the Order of the Knights Templar. What is this secret, and why does everyone who touches it end their lives tragically? This, in the end, is what de Wolfe has to find out, having gone through many dangers and adventures with his assistants.