The Son of Rusty is a 1947 American drama film directed by Lew Landers and starring Ted Donaldson, Stephen Dunne and Ann Doran. It was part of Columbia Pictures' eight-film Rusty series about a boy and his valiant German Shepherd.

Plot

Danny Mitchell and friends, Squeaky Foley, Gerald Hebble, Nip and Tuck Worden hang out in their clubhouse, listening to the radio serial "Fang, the Detective Dog" while they collect enough Vitabark box tops to send off for a book How to Train Your Dog to Be a Detective so they can train Danny's German Shepherd, Rusty. The clubhouse is on private property belonging to retired lawyer Franklyn B. Gibson, who instead of running the boys off, uses it as an opportunity to teach a lesson in responsibility.