Room Upstairs

This whodunit is the last one starring George Nader. Ellery Queen (Nader) takes a job as a chauffeur with a wealthy family, one of whose daughters is “confined” to her room. The girl had been in an auto accident and no one, not even her fiancé, is permitted to see her. When the body of an unidentified girl is found in the river, the local detective asks Ellery’s help in solving the mystery.