Lost Angel is a 1943 drama film directed by Roy Rowland, starring Margaret O'Brien as a little orphan girl raised to be a genius.

The professors of the Institute of Child Psychology raise a foundling baby, whom they name "Alpha", as an experiment to see if a scientific upbringing can create a genius.

By the time she is six years old, Alpha can speak Chinese, play chess and the harp, and has studied algebra and the campaigns of Napoleon, among other things.

He manages to secure an interview, despite the reluctance of the professors, and discovers that Alpha, while raised with loving care, has missed out on the joys of childhood.

That night, escaped convicted murderer Packy Roost (Keenan Wynn) shows up at Mike's apartment.