A Simple Twist of Fate (1994) on Netflix

His life was emotionally closed off from the world, until an orphaned baby showed up at his house.

Michael McCann is a man who feels totally betrayed by the world, after his wife revealed to him that their child was not his. A few years after his break-up we find him living alone in a small town. But, everything in his miserable life changes when he adopts a little girl whose mother died outside his house. After several years, the real father returns to claim the girl from Michael, thinking that she will be an advantage for his political career.

—Chris Makrozahopoulos <makzax@hotmail.com>

When Michael McCann is thrown over by the woman he loves, he becomes something of a misanthrope and a miser, spending all of his spare money on collectible gold coins. Living in the same town is an affluent family with two sons: John and Tanny. Tanny's a wild boy, whom John cannot control, and one night he breaks into McCann's house, and steals the gold and disappears, which nearly confirms McCann's distrust of mankind. But then, a mysterious young woman dies in the snow outside McCann's house, and her small daughter makes her way to McCann's house and into McCann's life and heart. He names her Matilda, and raises her, finding companionship and a new joy in life with his adopted daughter. But the secret of Matilda's birth may tear them apart.

—Kathy Li