What Makes a Great Psychological Thriller Twist?
Updated: Oct 2
There’s nothing quite like being completely fooled by a psychological thriller.
You’ve spent the last 300 pages watching everyone like a hawk. You’ve mentally underlined the suspicious comments, decided at least three characters are lying and become increasingly convinced that the very nice neighbour is FAR too nice to be trusted. Then the twist lands and you realise the answer was sitting under your nose the entire time.
As a thriller reader, I LOVE that moment. As a thriller writer, I love being the person creating it.
For me, a great psychological thriller twist surprises you in the moment but makes complete sense afterwards. The clues were there, but you just didn’t realise they were clues until the end. That's all down to the sneaky game we authors are playing. I know that you are trying to figure things out as you go, and I want to stay one step ahead of you. Naughty, aren't I?!
But there are rules to this game. At least, I think there are.
First, we need you looking in the wrong direction
Misdirection is a huge part of a psychological thriller, but it doesn’t mean giving you false information. In fact, it’s much more fun when the information is true.
Perhaps a character is acting suspiciously. They’re definitely hiding something and I give you enough reasons to start wondering what it is. Naturally, you connect their behaviour to the central mystery. Except the secret they’re hiding has nothing to do with it.
As the author, I haven't lied to you. I've simply allowed you to make an assumption and then quietly carried on while you disappeared down the wrong path. And thriller readers make this both incredibly fun and rather difficult because you lot are suspicious!
We’ve trained ourselves to notice the strange reaction, the slightly odd choice of words or the character who appears to have absolutely no reason to be in the story. We’re constantly trying to work out what matters. Which means the writer has to know where you’re likely to look... and give you something interesting to look at.
How psychological thriller writers hide clues in plain sight
This is one of my favourite parts. The best psychological thriller twists don't rely on information suddenly appearing from nowhere. The groundwork has often been laid much earlier, except you didn't realise what you were looking at.
I have often found myself so focussed on a character in a thriller that a comment or reaction from the well to do young women barely even registers. Then comes the reveal and suddenly that detail means something else entirely.
That's when you get that wonderful HOW DID I MISS THAT? feeling. For me, both as a reader and a writer, that's far more satisfying than "Well, I couldn't possibly have guessed that."
Yes, we're withholding things from you
I hate to break it to you, but thriller writers are keeping things from you all the time. We decide whose eyes you see the story through, which conversations you witness, when you learn something about a character’s past and when a piece of information finally clicks into place.
It gets even more interesting when you’re reading an unreliable narrator, because you already know you shouldn't necessarily take everything at face value. But even an unreliable narrator needs to feel fair once you understand what they’ve been hiding... or how you’ve misinterpreted what they told you.
If you’re inside a character’s head and they know a huge secret, there’s only so long they can conveniently avoid thinking about it before you start to feel the author lurking behind them saying, Don't mention that yet!
I have read books like that and it can be deeply frustrating because you haven't really been given a chance to put the pieces together. I'd much rather tell you something and have you misunderstand it. Then, when the truth comes out, you can look back and realise it was there. I didn't hide it. I just let you (or maybe led you to) draw your own (maybe misguided) conclusions because you didn't know the importance of that piece of information - yet!
Sneaky? Yes.
Cheating? Hopefully not.
The twists that really get me aren't always about the crime
We tend to think of a thriller twist as the moment we discover who the killer is or finally find out what happened. But psychological thrillers have another rather delicious advantage: people. Sometimes the revelation that hits hardest isn't who did it? but who is this person, really?
A relationship you thought was loving suddenly looks controlling. Someone you've distrusted for half the book turns out to have been protecting somebody. A character you believed completely suddenly gives you a reason to question every conversation you've had with them.
Those are the twists I find especially interesting because they change more than the plot, they get under our skin and suddenly everything we had felt about these people changes. And that's where the psychological bit really earns its place. We're not simply trying to solve a crime. We're making judgements about people as we decide who we trust, who we dislike, who we believe and whose version of events feels true.
So when a writer manages to make us realise we've completely misjudged someone? Ouch... in the best possible way.
Sometimes the ground just keeps shifting
Of course, not every psychological thriller is saving one enormous TWIST for the final chapter. Sometimes the fun comes from a series of smaller reversals.
You think you understand what happened and then discover something that changes it. You adjust your theory. A few chapters later, another piece of information knocks it sideways again.
I love that in psychological suspense because it keeps changing the questions we're asking. Perhaps we start with Who is lying? Then it becomes Why are they lying? And eventually we realise we've been asking the wrong question altogether. Done well, those smaller shifts can be every bit as satisfying as one enormous final reveal.
But can there be TOO many twists?
Oh yes. I love a twisty thriller, but if absolutely everything I've been told turns out to be untrue, at some point I'm going to stop trusting the story altogether.
A big reveal needs space to land. If I've just discovered something that completely changes how I see a character or relationship, I want a moment to absorb it. I want to think back over what I've read and understand what this new information changes.
If another twist arrives immediately, followed by another and then ANOTHER, each one can start to matter a little less, causing more confusion than those delicious WHAT?! moments we read thrillers for.
So, what makes a psychological thriller twist really work?
For me, it's that moment when surprise gives way to recognition: "Well, I didn't see it coming, but now you've shown me, of course that's what happened." The odd comment in chapter 8 now makes sense through this different lens. The behaviour I interpreted one way suddenly means something else. The character I trusted looks very different. Nothing has been rewritten. I've simply been given the missing piece that reveals the picture as intended.
That's the game we thriller writers are playing with readers from the moment they open the book. We're planting things, distracting readers, deciding exactly when to let them see certain pieces of the puzzle and hoping we can stay ahead of our clever readers until we're ready to show our hand.
Meanwhile, readers are watching everything we do and trying to catch us out. It's a proper fun game! And perhaps that's why a really great psychological thriller twist is so satisfying.
Want to read my super twisty books? Check out my books page or head to Amazon which regularly runs great deals for my twisty books.
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