The Constant Woman

The Constant Woman (1933), also known as Auction in Souls and Hell in a Circus, is an American Pre-Code film directed by Victor Schertzinger. It is based on the 1913 Eugene O'Neill play "Recklessness".
Plot.
Marlene Underwood is a star circus performer, whose husband Walt buys the circus while their son Jimmie worships everything his mother does. Marlene leaves them both to go join a larger show, then is killed in a fire, resulting in Walt going into a downward spiral of alcohol and sorrow.
A woman called Lou helps restore Walt's faith in human nature, but she is resented by young Jimmie, who feels she is trying to take his mother's place. Walt gets back on his feet, but now must try to stop Jimmie from joining the circus himself.