sentences:  "The Razor's Edge", which was filmed before "Ghostbusters" but not released until after, was a box-office flop.Frustrated over the failure of "The Razor's Edge", Murray stepped away from acting for four years to study philosophy and history at Sorbonne University, frequent the Cinémathèque in Paris, and spend time with his family in their Hudson River Valley home.During that time, his second son, Luke, was born.