The Return of October

The Return of October is a 1948 American sports comedy film directed by Joseph H. Lewis and starring Glenn Ford, Terry Moore and James Gleason.

Terry is a teenage girl whose Uncle Willy, a horse trainer, dreams of winning the Derby.

Now living with wealthy Aunt Martha, the girl is convinced that Uncle Willy has been reincarnated as a horse named October.

A psychology professor, Bentley Bassett, writes a book about Terry, which is used in a sanity hearing against her by crooked relatives who want dying Aunt Martha's money.

They enter October in the Derby, where other bettors join them in cheering "Uncle Willy" to victory.