Rinty becomes the best pal of juvenile "human" hero Danny O'Shea. Their devotion to one another is proven beyond doubt when Danny is threatened by kidnappers.
Rin-Tin-Tin
as Rinty
Virginia Brown Faire
as Virginia Calhoun
Carroll Nye
as Robert Hammond
Robert Gordon
as Danny O'Shea
James Pier Mason
as Bruce Morgan
Pat Hartigan
as Tramp
