Mad Love (1935)
In Paris, a demented surgeons obsession with a British actress leads him to secretly replace her concert pianist husbands mangled hands with those of a guillotined murderer with a gift for knife throwing
The Invisible Ray (1936)
A scientist becomes murderous after discovering, and being exposed to the radiation of, a powerful new element called Radium X
Theres Always a Woman (1938)
An investigator for the district attorney and his amateur sleuth wife compete to solve a murder mystery