Trapped by Boston Blackie Killing Low-Down on High Society! Blackie is the natural suspect when an expensive pearl necklace is stolen while he is supposed to be guarding it. Details Casts Galleries Posters Title Trapped by Boston Blackie Release Date 1948-05-13 Runtime 01 Hours 07 Minutes Genres Crime Mystery Production Companies Columbia Pictures Production Countries United States of America Chester Morris... Horatio 'Boston Blackie' ... June Vincent... Doris Howell... Richard Lane... Insp. William R. Farraday... Patricia Barry... Joan Howell (as Patricia ... George E. Stone... The Runt... Frank Sully... Sgt. Matthews... Edward Norris... Igor Borio... Fay Baker... Margie O'Reilly, alias Sa... William Forrest... Mason Carter... Sarah Selby... Claire Carter... Mary Currier... Helen Kenyon... Bess Flowers... Party guest... Original Size (1280x720) Original Size (1000x1500) Original Size (1759x2638)