Basil Rathbone
Sherlock Holmes
Acting
Nigel Bruce
Dr. John Watson
Acting
Aubrey Mather
Alastair
Acting
Paul Cavanagh
Simon Merrivale
Acting
Dennis Hoey
Inspector Lestrade
Acting
Harry Cording
John Simpson
Acting
Holmes Herbert
Alan Cosgrave
Acting
Sally Shepherd
Mrs. Monteith
Acting
Gavin Muir
Chalmers
Acting
Florette Hillier
Alison MacGregor
Acting
David Clyde
Alex MacGregor
Acting
Doris Lloyd
Bessie
Acting
Cyril Delevanti
Stanley Raeburn (uncredited)
Acting
Alec Craig
Angus (uncredited)
Acting
Richard Alexander
Ralph King (uncredited)
Acting
Bobby Hale
Pub Patron (uncredited)
Acting