When inevitable derailment eventuates, you wonder how it happened so quickly.
There are, of course, reasons behind their awkward courtship, one particularly pointed event, which McEwan has chosen to only hint at. For the most part, the film concentrates on the immediate break down of their relationship.
The confidence of a novelist who has adapted his own book is in full effect here and feature director debutant Dominic Cooke has done a commendable job managing McEwan's material, helped immensely by Ronan and Howle's vivid performances.
Unfortunately the film's final throw, a desperately sad flash-forward, loses itself in inches of poor facial prosthetics.
A shame to have the story tarnished by a technical distraction, because otherwise On Chesil Beach delivers solid performances, an intriguing story, and perhaps the most beautifully framed final shot I've seen in a while.
On Chesil Beach
Director: Dominic Cooke
Cast: Saoirse Ronan, Billy Howle, Emily Watson
Running time: 109 minutes
Censor Rating: M, nudity & sex scenes