Tonelli (1943)

Circus performer Tonio Tonelli discovers his wife Maja having an affair with his colleague Tino. Tonio goes away, and slowly rebuilds his career before meeting tightrope walker Nelly. The two become a popular sensation, which leads his estranged wife to try and force him back into a partnership with her through blackmail. When she is found dead, Tonio is the obvious suspect for her murder.