Frank Schaeffer, son of the late Edith Schaeffer, wrote which acclaimed novels? 
Edith Schaeffer:  She was the wife of Francis Schaeffer, and the mother of Frank Schaeffer and three other children. Frank Schaeffer:  He became a Hollywood film director and author, writing several internationally acclaimed novels depicting life in a strict evangelical household including "Portofino", "Zermatt", and "Saving Grandma".
"Portofino", "Zermatt", and "Saving Grandma".