- Mahlon Hamilton
- Boston Graham
- Vivian Rich
- Beth Cameron
- Frederick Vroom
- David Cameron
- Frank Lackteen
- Tex Osborne
- Omar Whitehead
- Doctor Gibbs
- William Quinn
- Ike Rogers
- Fred DeSilva
- Sam Kellerman
- Charles Brinley
- Yarrow
- Nelson McDowell
- Angus McPherson
- William Dale
- Alexander Jones
- Lillian Gale
- Mrs. Jones
- Roy Bassett
- The Mysterious Stranger
