Summoned from New York by a cryptic telegram, Nick Carter arrives in Boston to investigate the supposed heart failure of wealthy Samuel Rogers—and immediately senses murder beneath the surface. A hidden hypodermic point, a broken syringe, and a vial of deadly South American poison reveal that the death was staged to look natural, while the family's inheritance terms and Dr. Lord's impending marriage expose a deadly motive. As Nick probes the anxious young heir, he uncovers a secret wife, a blackmail plot, and a forged bond that could shift a fortune overnight. The mystery widens through false identities and dangerous alliances: the elusive Cuban woman Alvarez, the scheming Anita, and the men linked to Moreno all circle the Rogers household. Nick and Chick track suspects from the mansion to Boston restaurants, Providence, Worcester, and the Bay State Hotel, while an attempted stabbing warns that the conspirators are willing to kill again. In a tense confrontation, Nick faces Anita and begins to unravel the full scheme of murder, deception, and marriage-for-money. This edition has been fully restored with modern typesetting, custom cover design.