The Duplicate Night by Nicholas Carter

At a glittering masked ball in the Carrington mansion, Nick Carter and Chick stand guard amid costumed guests, priceless jewels, and a danger hidden beneath the elegance. Nick is drawn to two women dressed alike as Night, and when one meets a masked toreador and slips away, the evening's glamour gives way to a baffling disappearance involving Archie Waldmere, his wife Mollie, and a forged summons that may have been designed to split husband and wife apart. As Nick probes deeper, he discovers that stolen invitation cards, missing guests, and a disabled telephone line point to a carefully engineered fraud. The trail leads from the ballroom to a late-night inquiry in Brooklyn, where the Ringolds reveal how impostors used their names to gain entry and conceal a larger scheme. Before long, Nick, aided by his team, follows the evidence into a deadly conspiracy. In a midnight confrontation, he uses a dictograph and a disguise to trap Sir Edward Chadwick, exposing a murder plot tied to Waldmere's death and making a dramatic arrest—just as Chick vanishes and the real Mr. Pimlico remains missing. This edition has been fully restored with modern typesetting, custom cover design.