Hidden DangersAdventure57Hidden Dangers57Adventurethumb_upthumb_downHidden DangersSeptember 1, 1920Directed byWilliam BertramHidden Dangers is a 1920 serial film.US content warning movie serial Last Updated: 24 days ago Request Update CastJoe RyanDr. Richard BrutellJean PaigeMadeline StantonGeorge StanleyRobert StantonSam PoloPinchersRobert EnsmingerSheriff MacklinCharles DudleyWilliam McCallCamille Sheeley