A police detective uses fluorescent powder to catch a pickpocket and her gang.
Edward Arnold
as Lt. Lorrgan
Selena Royle
as 'Ma' Abby Dibson
Tom Trout
as Lefty Dibson
Audrey Totter
as Jessie Belle Dibson
Dan Duryea
as Posey Dibson
Hume Cronyn
as Keller
Dorothy Morris
as Rosalie Dibson (as Dorothy Ruth Morris)
Wally Cassell
as Jenkins (uncredited)
Kernan Cripps
as Police Scientist (uncredited)
Tom Drake
as Radio Broadcaster (voice) (uncredited)
Dick Elliott
as MacLean (uncredited)
William Frambes
as Serviceman in Police Station (uncredited)
