"The Insidious Dr. Fu-Manchu" by Sax Rohmer is a thrilling novel written during the early 20th century. The story revolves around the enigmatic and sinister Dr. Fu-Manchu, a master criminal who embodies the fears of the East during that era, and follows the relentless detective Nayland Smith as he investigates a series of mysterious and fatal occurrences linked to Fu-Manchu's nefarious activities. The opening of the narrative introduces Dr. Petrie, a physicianwhose ordinary life is disrupted by the unexpected arrival of his friend Nayland Smith. Smith, who has just returned from Burma, brings urgent news about a dangerous threat to the British Empire posed by the villainous Dr. Fu-Manchu. He reveals that Sir Crichton Davey, a notable figure, has just been killed, presumably by Fu-Manchu's deadly machinations. The atmosphere quickly shifts to one of tension and mystery as Petrie and Smith navigate the ramifications of this event, setting the stage for a suspense-filled chase against an almost supernatural adversary, leaving readers eager to unravel the complexities that lie ahead. (This is an automatically generated summary.)