Although the character had appeared in a couple of earlier films, this was the first of a new series of Ellery Queen films in the 1940s.
The owner of a fitness company John Braun (Fred Niblo) falls ill suddenly and writes a new will cutting out his daughter. Nikki Porter (Margaret Lindsay) meanwhile wants to see Braun, to try and help improve relations between Braun and his estranged daughter (Marsha Hunt). While she is waiting for Braun, she finds herself locked in a room. When she gets out she finds Braun has been stabbed, but the murder weapon is missing. Amateur detective Ellery Queen (Ralph Bellamy) knows Nikki will be the number one suspect and helps hide her from the law while trying to find the murderer himself...
An enjoyable film, bright and breezy with some good charismatic lead performances and a fast moving plot.
