The Twilight Zone - Season 2 Episode 4

A Woman goes to a mall for a doll, but encounters strange things after the closing hours... A young college student has been losing personal items for some time. The mystery is resolved when she finds two time-travelers in her closet. A hen-pecked man with a boring life and a secret yearn to build inventions finds a secret door in his basement that leads to a parallel world. In that world, his counterpart is a rich famous inventor in a Victorian-style setting who is equally bored with his life. The two switch lives and are happy ever after.