Jon Trace Books in Order

A ritual killing near Stonehenge and a treasure hunter's suicide draw his estranged son Gideon into an investigation. Working with a policewoman, Gideon follows a cryptic letter toward a secret society as the summer solstice approaches.

Two American police officers investigate a series of brutal murders that leads from California to the Vatican. The mystery surrounding the Turin Shroud becomes central to their pursuit of a killer and a dangerous concealed secret.

Former priest Tom Shaman's visit to Venice becomes an investigation when local police recruit him to help with ritual murders. Alongside Valentina Morassi, he follows clues connecting the killings to an ancient Etruscan mosaic and religious secrets.

FBI investigator Mitzi Fallon examines an antique dealer's murder and the theft of a Celtic relic. Her newly formed historical and religious crimes unit follows evidence connecting an ancient Welsh prophecy about King Arthur to modern government.

Former priest Tom Shaman encounters a young woman covered in blood who says she escaped an ancient power. His involvement in a police investigation exposes connections between Rome's legends, the Church and enemies pursuing their own ambitions.

Awaiting execution in 1900, assassin Simeon Lynch reflects on his work for Professor Moriarty's criminal organization. Determined to escape, he confronts secrets involving his master, Sherlock Holmes and his own past while preparing to kill again.