Fitzgerald didn't finish this novel, so screenwriter Harold Pinter had to come up with an ending for the 1976 film
[DOC] [TLE] The Comfort of Strangers Reviews & Ratings - IMDb [PAR] And the film has countless - its ending may be considered sporadic, extreme, or, 
... And he berates Colin not so subtly when Colin criticizes Robert's collection of 
his ... We'd have Harold Pinter write the screenplay, and every line would be ... at 
all within the narrative of the film and which did make sense in McEwan's book.