recoiled in alarm. "What's got into you, Lieutenant? Say what?" "Taking in washing!" "Takin' in washin'? What for?" Kirk's grin threatened to split his face, "The same words," he said, "but you say them different. Only your way's the right way! Thanks, pal. Now get out of here!" Chenowich went. His mouth was still open and his expression still troubled, but he went. The last of the killer's cryptic remarks was now clear. For Kirk realized that "takin'" rhymed with words you'd never associate with "taking." "Bacon", for instance—or "Dakin"! Alma Dakin, former secretary to two widely separated, and now dead, nuclear scientists. Her name had been mentioned by the slayer of Professor Gilmore only seconds before she had clubbed the savant to death. But now that "taking" had come out "Dakin"—what did the rest of the phrase mean? Dakin in washing made no sense. What sounded like washing? Washing; washing ... watching? It was close; in fact nothing he could think of came closer. All right. Dakin in watching; no. Dakin is watching—that made sense. But Alma Dakin hadn't been watching anything at the time of the killing; she, according to Cordell, was at her desk in the outer office. That would leave Dakin was watching as the right combination. Watching for the right opportunity for murder! What did it mean? Well, assuming from her past record that Alma Dakin was mixed up in the deaths of two prominent men of science, it argued that she and Naia North were accomplices in a scheme to rid America of her nuclear fission experts. The nice smooth story of killing Gilmore because of unrequited love was probably as much a lie as the personal information Naia North had given Arthur Kahler Troy. The North girl had confessed to murdering Gilmore and Juanita Cordell. As a confessed killer she must be taken into custody and booked on suspicion of homicide. Taking her was Martin Kirk's job—and it seemed he had a contact that would lead him to her. Namely Alma Dakin. Lieutenant Kirk grabbed his hat and went out the door. Chapter V The address for Alma Dakin turned out to be a small three-story walk-up apartment building on a quiet