His Secret Family 2015 on netflix

Sarah was living the perfect life with her husband, Jason and their son Brandon until… Jason simply disappears! Days of searching turn into weeks of agony for Sarah and her son Brandon. To make matters worse, Sarah’s son suffers from a rare genetic disease and only Jason’s DNA can save him. When Sarah finally tracks down Jason, he sets out to make sure Sarah doesn’t ruin his secret life and expose his dangerous past.