The thieves start back to the freight car for another load of stolen goods. This is Kay's chance. Quickly she lets herself into the shack and lifts the trap-door. In the dark cellar, dimly lighted by the lamp, she sees many crates and boxes, undoubtedly the thieves' loot. Without hesitation Kay descends the ladder.

Too late she hears footsteps overhead. The men have returned. Kay is trapped! Despite her efforts to conceal herself she is found, dragged from her hiding-place and bound and gagged. Still struggling, she is pushed into a large, empty packing case. The men nail down the cover. In terror, Kay feels the case being lifted and carried. Where are they taking her? She hears the shrill blast of a train...

How Kay Tracey works herself out of this tight spot is only part of this exciting story that begins with the teen-age detective joining the hunt for the kidnapper of a beautiful movie star. Playing the part of the glamorous star, Kay finds the trail is hot -- and dangerous. The wearer of the six-fingered glove will stop at nothing to throw her off the scent. Even Kay's jealous classmate, Ethel Eaton, does everything she can to thwart Kay -- and nearly succeeds.