The first of fourteen Boston Blackie films made in the 1940s starring Chester Morris.
Boston Blackie (Morris), the famous former jewel thief, has arrived back in New York on the trans-Atlantic ocean liner. He tries to strike up a conversation with fellow passenger Marilyn (Constance Worth) but is rebuffed, but soon he discovers the dead body of a man who had been hassling her in his cabin! With Inspector Faraday (Richard Lane) keen to question him for some jewel thefts, Blackie gives the law the slip in order to pursue Marilyn.
He tracks her to Coney Island amusement park, amid the freak shows Marilyn is killed by some men. Boston Blackie now has to clear his name and unravel a complicated plot involving enemy agents and US Navy technology... and a man who pretends to be a robot.
The first in the series, not everything is as smooth as some of the other entries in the series, there is a bit less humour and charm by Blackie. The Runt is also played by a different actor (Charles Wagenheim). Rochelle Hudson plays Blackie's charming female assistant. This is an enjoyable B-movie crime romp though and you can see why it led to a lengthy series.