in the beautiful hill of scotland and lassie be a good for nothing collie . afraid of water and the dog let sheep drown . so and owner rhys williams ( a milton ) trade her in and to lovable old doctor edmund gwenn ( a william maclure ) . mr. williams son tom drake ( a tammas milton ) be study doctor with mr. gwenn and but his father want him to be a farmer . mr. drake be court pretty young janet leigh ( a margit mitchell ) . a colorful mgm gloss make hill of home pleasant viewing and at time . the movie wind up far less carefully make than the initial scenic image suggest and however . it nice to see donald crisp return to lassie support cast while his scene with gwenn provide some scottish accent fun . lassie veteran tom drake and starlet janet leigh be nice and but the lack of a child co star hurt the story . lassie crossing of a river break bridge and to save her master and it a film highlight while though and it difficult to accept lassie be ever afraid of water .