A beautiful woman scorned by a former lover, a hot-headed husband intent on defending his wife's honor, and a Deputy U.S. Marshal assigned to protect a Supreme Court Justice came together in an explosive confrontation on August 14, 1889, in the Lathrop, California, railway station in the San Joaquin Valley. The result was a dead husband, an insane wife, and a landmark Supreme Court decision that substantially expanded the powers of the executive branch and affirmed the authority for U. S. Marshals and their Deputies to use force in the performance of their lawful duties.