Vitus Tesla (archive footage)
Mr. Wong (archive footage)
Lyle Talbot (archive footage)
Armand Tesla
Rosalind Darrow
Count Vega
Mary Ankers
Grant Gardner
Detective Mike Flanigan
Ace Zucco
Edna Oliver
George Carradine
Angelina Weston
Lucy Weston
Madame Ouspenskaya
Doctor Colin
Mr. Buchannon - Attorney