Professional gambler Lucky (Dermot Walsh) is having trouble living up to his name. That's before Lucky meets Joan (Glynis Johns), a winsome lass who proves to be a human good-luck charm. Lucky woos Joan into accompanying him on the gambling circuit so he can clean up. She convinces herself that he'll reform, but it takes a near-tragedy to do that. Third Time Lucky was a Late Late Show perennial in the 1950s and 1960s. ~ Hal Erickson, All Movie Guide