Margaret Holt and her brother Victor set out to smash a narcotics ring responsible for their father's death. Young reporter John Howell and eccentric mystery writer Winthrop Clavering help unravel the truth about the murder.
| Actor | Role |
|---|---|
 Bessie LoveMargaret Holt | Margaret Holt |
 Ned SparksWinthrop 'Little Nemo' Clavering | Winthrop 'Little Nemo' Clavering |
 Hugh TrevorJohn Howell | John Howell |
 Ivan LebedeffButch Miller | Butch Miller |
 Rita La RoyNita Strom | Nita Strom |
 Gertrude HowardMartha | Martha |
 Otto MatiesonJames Morton / Steamer Marko | James Morton / Steamer Marko |
 Walter LongWeinberg | Weinberg |
| DDonald MacKenzieCaptain McLeod | Captain McLeod |
 Jane KeckleyRose Towne | Rose Towne |
 Oscar ApfelTourist Husband (uncredited) | Tourist Husband (uncredited) |
 James Bradbury Sr.Professor of Languages (uncredited) | Professor of Languages (uncredited) |
 Robert DudleyMr. Christopher (uncredited) | Mr. Christopher (uncredited) |
 George IrvingMark Holt (uncredited) | Mark Holt (uncredited) |
 Gladden JamesEd a Tourist at Hotel (uncredited) | Ed a Tourist at Hotel (uncredited) |
 Bert MoorhouseVictor Holt (uncredited) | Victor Holt (uncredited) |
 Lucille WardTourist Wife (uncredited) | Tourist Wife (uncredited) |