Lauritz Olsen

as Sherlock Holmes

Waldemar Hansen

as Sagfører

Julie Henriksen

as Sagførerens kone

Otto Lagoni

as Kontorist

Frederik Jacobsen

as Lord Capetown

Parly Petersen

Otto Detlefsen

Axel Boesen

as Skurk

Axel Schultz

Franz Skondrup