Los irregulares

Henry Lloyd-Hughes

Sherlock Holmes

Royce Pierreson

Dr. Watson

McKell David

Spike

Thaddea Graham

Bea

Jojo Macari

Billy

Harrison Osterfield

Leopold

Darci Shaw

Jessie

Clarke Peters

Linen Man

Eileen O'Higgins

Alice

Micah Loubon

Luke Porter

Lisa Dwyer Hogg

Sister Anna

Edward Hogg

Daimler

Nicola Goodchild

Archivist

Daniel Fearn

Barman

Suzie Chard

Prostitute

Anthony Bessick

Ring Announcer

Rory McCann

The Bird Master / Arthur Hilton

John Alan Roberts

Reporter (uncredited)