Are Digital Footprints the New Fingerprints?

Nicci Cloke’s “Her Many Faces”: Online Obsession as a Legal Weapon

Cover of Nicci Cloke’s “Her Many Faces” on cast iron fence

Her Many Faces | Nicci Cloke | William Morrow (336 Pages)

Digital footprints may be the new fingerprints, but unlike fingerprints, they tell stories — narratives that can be twisted, selectively quoted, or simply misunderstood. In Nicci Cloke’s excellent new novel, Her Many Faces, the fictional conspiracy website The Rabbit Hole isn’t just a dark corner of the internet. It’s Exhibit A in a murder case.

So, what exactly happened?

The novel centers on Katherine Cole, a young waitress on trial for poisoning four wealthy men with brandy at a posh London club. The prosecution relies less on forensics and more on Katherine’s teenage internet history — posts, searches, and old comment threads from The Rabbit Hole. What emerges is a chilling look at how casual clicks can be submitted as character evidence.

Told through the voices of five men — her father, childhood friend, ex-lover, lawyer, and a crime journalist — the story builds a Rashomon-like kaleidoscope around a woman caught at the center of a digital-age mystery.

Her Many Faces  isn’t just a thriller. It’s a tightly wound psychological mystery that unpacks everything from shifting identities to the high-stakes consequences of our online lives. I devoured it in one breathless sitting, flipping pages late into the night. The short, taut chapters kept me saying, “Just one more,” until it was far too late.

But what made Her Many Faces linger with me wasn’t just the central mystery of Who is Katherine Cole, and is she a murderer?

What stayed with me was the way Cloke uses digital evidence — especially the fictional conspiracy theory website The Rabbit Hole — to explore how online behavior gets interpreted in a courtroom. And how real-life digital trails can become part of a narrative. And one we can no longer control.

The internet never forgets. Neither does the prosecution

Katherine Cole is a 22-year-old waitress when she is arrested for the brutal murdered. But her guilt or innocence becomes less about forensics and more about the story prosecutors are able to tell. And the story they tell revolves heavily around Katherine’s online presence, especially her teenage obsession with The Rabbit Hole, a conspiracy-laden forum that traffics in dark speculation: pandemic hoaxes, 9/11 trutherism, deep state bunkers, you name it.

From a legal standpoint, the digital evidence is potentially damning. Tarun Rao, Katherine’s seasoned yet fragile defense attorney (recovering from some kind of collapse after a recent trial), is wary. He knows the prosecution has brought in a digital expert witness, and he plans to counter with his own: someone who specializes in online radicalization. This decision is telling. The defense isn’t fighting solely on the facts, but on the murky terrain of a digital history.

“We will need to set out the elements of the prosecution’s case we feel insufficient to prove your guilt; the most important of these are the fingerprint evidence and the digital evidence regarding the Rabbit Hole website.”

Tarun’s assistant compiles a spreadsheet detailing Katherine’s past online activity. There is the evidence of obsessive (or perhaps, as Katherine told Tarun, just habitually when bored) scrolling. And teenage posts like “this place is opening my eyes so much,” which is gets presented not as harmless curiosity or digital adolescence, but as a potential motive.

Photo by Edi Simetzberger on Unsplash

When Browsing History Becomes Character Evidence

Asa legal book blogger, what I found most chilling is how Cloke renders the ways digital activity can be weaponized in trial. Katherine’s lawyer reflects:

“It’s not ideal. But reading something isn’t a crime, nor is it proof that you agreed with comments that were written there.”

Yet as the prosecution makes clear, the line between reading and believing can become paper-thin when placed before a jury. Katherine’s lawyer is constantly working to dismantle the idea that casual Googling and message board comments can be taken as extremist intent.

I did a quick Google search on how digital history has been used in the trials. I was careful not to obsessively spend too much time on it. Cloke’s fictional Rabbit Hole isn’t far removed from real-world sites that have already made courtroom appearances.

In the 2021 Capitol riot trials, defendants’ Reddit and Facebook posts were introduced as evidence of intent and radicalization. And in the NXIVM trial, where Slack messages, emails, and Dropbox files became central to understanding the psychological manipulation behind the cult. So it’s real.

One particularly haunting moment comes when Katherine’s father reflects on her charges:

“That you might spend the rest of your life in prison because of these stories — bad men inventing pandemics and wars, controlling us through radio waves — seemed unthinkable…”

This is where Her Many Faces transcends thriller territory — it becomes a study in how narratives are manufactured and consumed. Both online and in court.

I didn’t expect to understand the pull of The Rabbit Hole, but I did.

Reading this book gave me a deeper empathy for how people fall into conspiracy theory rabbit holes. The fictional site is written with eerie authenticity. It mimics the psychological pull of real-life forums like Reddit’s r/conspiracy or 4chan’s /x/.

The novel follows Katherine’s on-time obsession with the enigmatic Mr. E, whose cryptic posts often turn out to be remarkably accurate or to have a shred of real-life confirmation, which helps him build a large following. I get the appeal.

On the way to court one day, the ambitious click-hungry journalist, Max, starts reading the book Helter Skelter. He is wondering how hard he too could push the parallels between Mr. E and Charles Manson and his family. Max is well acquainted with The Rabbit Hole. He’s foundhimself a target in the past.

The sense of community and the presented-as-secret knowledge these forums offer proved to be addicting, especially for lonely, curious teenagers like Katherine and her friend Gabe. They give the illusion of something only their followers are smart enough to see. This book showed me it’s easy to judge until you see how algorithm-driven feeds and online tribalism play out.

Photo by cin . on Unsplash

Whose Story Wins? Digital Testimony in the Age of the Internet

What Her Many Faces taught me — and what makes it such a standout in legal suspense — is how precarious identity becomes in the digital age.

Katherine Cole may or may not be a killer. But what the courtroom sees isn’t just her, it sees her data. It is trial where online behavior was archived, then analyzed to craft a motive for murder.

Fans of The Silent Patient and Gone Girl will love this layered legal thriller with a modern twist. If you’re interested in conspiracy culture, courtroom drama, or digital evidence, this book is an absolute must-read. Cloke has written a thriller that doesn’t just keep you turning pages; it questions how our digital lives might someday be used to define us.


Thanks to William Morrow and NetGalley for the ARC