Meet Boston Blackie is a 1941 crime film starring Chester Morris as Boston Blackie, a notorious, but honorable jewel thief. Although the character had been the hero of a number of silent films, this was the first talking picture. It proved popular enough for Columbia Pictures to produce a total ofB movies, all starring Morris.
However, when Blackie discovers the body of the man who had bothered Marilyn Howard deposited in his suite, he has to break his word and debark to clear his name. He trails Howard to the Coney Island amusement park. She has been followed by two men and is struck by a poisoned dart. Before dying, she tells him enough to send him to the Mechanical Man Michael Rand, a midway performer whose act is pretending to be a robot or automaton. Soon after, the two killers show up to report to their boss, the Mechanical Man, forcing Blackie to flee once again.He hijacks the car belonging to Cecilia Bradley Rochelle Hudson, and manages to lose his pursuers after a highspeed chase. Cecilia decides to help Blackie, despite his attempts to keep her out of his troubles. They learn from a radio news broadcast that Howard was a spy. ........
Source: Wikipedia