"'You saw him then."
"I know it was him."
"Let's forget what you know. You're saying you saw him."
"Yes, I saw him."
"Just as you see me."
"Yes."
"You saw him with your own eyes."
"Yes. I saw him. I saw him'" (169).
With these words Briony concludes her interview, thus sealing the fate of Robbie Turner. The issue of whether or not Briony actually
saw anything at all that night remains in question, and there is a discrepancy in this point between the novel and the movie. In the novel, Briony's insistence on fitting the events of the world around her into the simple, orderly world of her novels, shapes her view on the incident. As Briony the novelist writes, "...she would have preferred to qualify, or complicate, her use of the word "saw." Less like seeing, more like knowing" (159). In the time leading up to the trial, "She was like a bride-to-be who begins to feel her sickening qualms as the day approaches, and dares not speak her mind because so many preparations have been made on her behalf" (159). In Briony's description of the actual incident, she at first believes Marshall and Lola to be a bush, and then sees only a dark human form hurrying away. So she saw nothing...probably. There is the distinct possibility that, as Briony is the author of this novel, she hoped to paint herself in a more flattering light, and thus shape this younger version of herself in order to offer some sort of excuse for her actions. The police even determined that there was enough moonlight and she was close enough to them to see who it had been, "Either she saw or she didn't see" (160). She could have seen something, anything at all, which had impacted her uncertainty, however, she attests that she saw nothing. If this is true, then there is also the very slim possibility that it
had been Robbie. As unlikely as it may be, judging from Robbie's character, it is possible. If Briony saw absolutely nothing, then Lola is the only witness. We are led to assume that she lied about not knowing who it was in order to protect Marshall, but what if she hadn't actually lied? Their marriage at the end of the novel is enough to convince Briony that Robbie was innocent, however, this evidence certainly would not hold up in a court of law. With no evidence to directly contradict it and the only witnesses unreliable and biased, these possibilities remain.
In the film, however, it is directly implied that Briony saw Marshall that day. Unlike the novel, Briony has a flashlight (or "torch" as the English say), and for a split second, it illuminates someone. In her surprise, Briony drops the flashlight, yet we are given the slightest hint of red hair, a mustache - very different characteristics from Robbie. It is thus heavily implied that Briony lied. It was not so much that she hadn't seen anything and instead allowed her beliefs to guide her eyes, it was that she explicitly lied. The film relies heavily on the drowning scene, asserting (falsely, I believe) that it was jealousy of Robbie's love for her sister that led her to accuse him. This incident is described in the book as well, however, it is not really given much importance. I suppose, however, that the very mentioning of it by Briony the author could be construed as significant - perhaps a freudian inclusion on Briony's part about the real reason for accusing Robbie. Regardless, the entire novel hinges on this incident, and the various interpretations of the "true" events can change one's entire view of the novel. Unfortunately, as this is ultimately a fictional work by McEwan, the "real" story will never be known - we can merely argue our various interpretations, never being able to reach a definite conclusion.