MELH UNTER and BILL WINTERS are assigned by COMMISSIONER HALL to interrogate espionage courier and former actress SALLY THOMAS in the hope of uncovering a new apparatus in Washington and its suspected head, ERIK JANKER. According to plan, Winters, who employs a Broadway Producer cover, maneuvers an invitation to Sally's apartment, where Hunter slips inside her shoulder strap purse and locates the apparatus contact list. But before he can return to the attache case and safety, Janner appears, recognizes Winters, imprisons him in a closet and exits with Sally. Knowing Janner will return shortly to kill Winters, the "Little Man" surmounts a series of obstacles and outwits a huge Doberman watchdog in order to contact the Bureau. Winters is rescued, Janner and Sally are arrested, and the apparatus is broken.
