Murphy's plans for semi-retirement with Sally, his newfound love, are put on hold with one call from his boss, William Burke, special assistant to the president. Counterfeit money turning up in banks all across the west could threaten the American economy and stock market. Leaving Sally at his Washington home, Murphy sets out to pick up the trail of the counterfeiter. Chasing his quarry across unforgiving mountains and deserts, Murphy is at his deadliest...

President Chester Arthur calls semi-retired Murphy back to duty when, with a pending meeting of world leaders in New York City, prostitutes are being murdered and dismembered in the streets. Arthur's special assistant William Burke travels to New York with Murphy where Murphy is given authorization to take command of the investigation. So important is the meeting with world leaders to Arthur that he calls upon the services of the Pinkerton Detective...

"Living a quiet life of semiretirement with Kai, his new wife, Murphy is called back into action by President Arthur to assist the New York City police with a serial killer on the loose in the city streets. What baffles the police most is that the killer is using a .36 caliber cap-and-ball revolver to kill his victims with, a weapon that has been obsolete since the end of the Civil War. In New York, Murphy is reunited with his old friend Melvin Knoop,...