Veteran detective John Verney is pursuing a mysterious cult of Plague Doctors wreaking havoc across London's criminal underworld. Initially regarded by his superiors as mere gang-related violence, the series of gruesome murders soon reveal a deeper, more sinister conspiracy. As Verney delves into the case, he uncovers ties to the infamous Jack the Ripper killings of 1888, plunging him into a perilous web of secret societies. With his life and his family's safety at stake, Verney must navigate a dangerous labyrinth of clues and cover-ups to bring the truth to light.