How the Book Ends

The final stretch of Rock Paper Scissors blows apart almost everything Adam and Amelia think they know about their marriage—and about the night Adam’s mother died.

While Adam and Amelia are trapped at the remote Scottish chapel, Robin slips her final anniversary letter under the locked door. In it, she finally reveals who she really is: Henry Winter’s estranged daughter. Henry didn’t disappear or retire from public life. He died from illness in 2018 and is buried behind the chapel. Robin has been writing the bestselling novels published under his name ever since.

But the letter contains an even bigger revelation. Robin tells Adam that Amelia was there the night his mother was killed in a hit-and-run twenty-five years earlier.

At first, that seems to confirm Amelia as the person responsible. Then Adam’s memories of the accident begin to return, and the truth is even worse.

Adam was driving the stolen car that killed his mother.

As teenagers, Amelia had encouraged him to take the car. After Adam struck his mother, Amelia panicked, shoved him out of the vehicle, and drove away, leaving him at the scene covered in his mother’s blood. Adam buried the memory so completely that he spent years believing someone else had been responsible. Because of his face blindness, he also failed to recognize Amelia when she deliberately entered his life years later, supposedly as a way of making amends for what happened.

Once the truth is exposed, Amelia begins to unravel. She is already struggling to breathe and discovers that Robin has emptied her inhaler. Desperate and cornered, she grabs a kitchen knife and lunges at Adam.

Robin emerges from the shadows and kills her, stabbing her with a pair of antique stork-shaped embroidery scissors.

And Adam doesn’t turn Robin in.

Instead, the two of them cover up Amelia’s death and return to London together. They get rid of Amelia’s belongings, redecorate the Victorian house, and effectively erase her from their lives. Adam and Robin resume their marriage, while Robin continues publishing novels under Henry Winter’s name. Adam adapts her books for the screen, finally giving him the creative success he has always wanted.

For a moment, it almost looks as though they have gotten exactly what they wanted.

Then comes the epilogue.

Months later, private investigator Samuel Smith travels to Scotland while searching for Henry Winter. He finds Henry’s grave behind the chained-up chapel. Sitting on the headstone is a glass box containing the singed paper crane, the stork scissors—and Amelia’s sapphire engagement ring.

The ring is still attached to Amelia’s severed finger.

Robin apparently couldn’t get the too-tight ring off Amelia’s hand, so she simply cut off the finger.

It’s the novel’s final grotesque reminder that no matter how thoroughly Adam and Robin try to rewrite what happened, the evidence of the past is still sitting there waiting to be found.

What the Ending Means

The title finally becomes literal in the climax. Throughout the novel, rock, paper, scissors represents choice, power, and the constantly shifting advantage between the characters. Robin even frames Adam’s final decision in terms of the game. In the end, though, scissors quite literally win: the stork scissors kill Amelia and sever the marriage that replaced Robin’s own.

Those scissors carry another layer of meaning. Storks traditionally suggest babies, birth, and new beginnings, yet Robin turns a pair of stork-shaped scissors into a murder weapon. Her “new beginning” with Adam can only happen after she violently removes Amelia from the picture. The rebirth of their marriage is therefore inseparable from death.

The sapphire ring is just as important. It originally belonged to Adam’s mother before eventually ending up on Amelia’s finger. Amelia wears it even though it is too tight, which mirrors the way she has forced herself into Adam’s life. She has tried to become the perfect wife and build a future around him as a form of penance, but the life never truly fits. The final image takes that metaphor to a gruesome extreme: the ring cannot be removed without taking part of Amelia with it.

The paper crane, meanwhile, reflects Adam and Robin’s relationship. It has been damaged and singed, but it survives. So does their marriage. That doesn’t make their reunion romantic, exactly. What remains between them is scarred, morally compromised, and built on yet another enormous secret.

Adam’s decision to return to Robin is especially revealing because he doesn’t emerge from the truth morally transformed. He simply finds a version of events he can live with. Learning that Amelia manipulated him as a teenager allows him to shift some of the emotional burden he has carried over his mother’s death. Covering up Amelia’s murder also gives him Robin back—and, conveniently, gives him access to the stories he has always wanted to bring to the screen.

Robin’s motives are equally complicated. Her plan isn’t merely revenge against the woman who took her husband. She is reclaiming virtually everything she believes has been stolen from her: Adam, her home, her dog, and even her identity as a writer. Her father received the public recognition while Robin remained invisible; now she secretly owns his literary legacy. Killing Amelia becomes the most extreme expression of that same impulse to take her life back.

That is what makes the ending so unsettling. Adam and Robin don’t respond to everything that has happened with horror or remorse. They treat it almost like a reset button. Amelia is removed, her possessions disappear, the house is redecorated, and the original couple starts again.

But Rock Paper Scissors repeatedly asks whether people can actually rewrite the past simply because the truth is unbearable. Amelia tried to turn her life with Adam into twenty-five years of atonement. Adam buried his own role in his mother’s death. Robin hides behind her dead father’s identity. By the end, Adam and Robin simply create one more version of reality that suits them better.

The problem is that reality leaves evidence.

What the Final Scene Suggests

Adam and Robin may feel safe in London, but the epilogue makes their happy ending look extremely fragile.

Their professional lives already depend on the secret that Henry Winter has been dead since 2018 while Robin continues publishing books under his name. Samuel Smith has now found Henry’s grave, meaning that deception could eventually unravel.

More dangerously, he has discovered the glass box containing Amelia’s severed finger and the murder weapon.

So the ending isn’t really saying Adam and Robin got away with murder. It leaves them in a temporary bubble in which they believe they have gotten away with it.

That final image brings the novel’s central idea full circle: the past can be hidden, denied, repackaged, and rewritten, but it cannot be made to disappear. Adam and Robin have begun their new life by burying another terrible truth—and the last page suggests that this one may already be clawing its way back to the surface.