Joan Palmer, responding to her widowed mother's needs, decides when she is finished with high school to go immediately to work. Her jobs as a secretary offer security but little satisfaction, and when she becomes aware of the duties of women police she undertakes to join the Force. Her training-- jujitsu, calisthenics, procedure-- the strict discipline to which she must adhere, is explicitly stated by the author, who, herself, has been associated with the Police Department. A series of assignments which range from probing gambling rackets to dealing with runaway children fire her with a genuine enthusiasm for her work. Determined to study for a degree through facilities offered by the Department, she looks forward to a career dealing with children, disposes of one beau and becomes engaged to a young co-worker. Within the framework of a teen-age career book, Gertrude Schimmel combines a generous amount of factual material with a series of engrossing fictional adventures.