Prison Shadows is a 1936 American crime film directed by Robert F. Hill and starring Edward J. Nugent, Lucille Lund and Joan Barclay.

[1] Gene Harris, a prizefighter, is sentenced to five years in prison after killing an opponent in the ring.

Gene's trainer Moran is suspicious of promoter George Miller, whose accomplice Claire Thomas is pretending to be in love with Gene while double-crossing him.

He returns to boxing, supported by Mary Comstock, a girl from Miller's office who believes in Gene's innocence, even after another foe dies while fighting him.

Overhearing a plot to kill him the same way, Gene plays dead and is carried out, setting a trap with the police that the villains fall into right after the fight.