True to Life (1943)

"ONLY REAL LIFE COULD BE SO SCREWY! SO SENSATIONAL! SO GOOD!"

A writer for a radio program needs some fresh ideas to juice up his show. For inspiration, he rents a room with a typical American family and begins to secretly write about their true life antics. The show becomes a big hit, but he begins to feel guilty about his charade when he falls in love with the family's pretty older daughter.