← Back to filmFilm · CastFull castThe Clue of the PigtailOn screenCast6 credited performersArtwork unavailableH. Agar LyonsDr. Fu ManchuFred PaulNayland SmithJoan ClarksonKaramanehArtwork unavailableHumberston WrightDr. PetrieFrank WilsonInspector WeymouthArtwork unavailableErnest SpauldingShen Yan