My Readers Guide for It Could Have Been Her by Lisa Jewell will look at this new dark suspense story by the author of None of This is True. My post includes a character list, plot summary, spoilers and a Q and A that covers my questions about the book and yours. Let’s discuss!

Readers Guide for It Could Have Been Her by Lisa Jewell
Table of Contents
- Readers Guide for It Could Have Been Her by Lisa Jewell
Jen’s Quick Take on It Could Have Been Her

- I LOVE books with crossover characters so I was excited to learn that “Mad Jane” Trevally from Don’t Let Him In would be the main character in It Could Have Been Her. Part of my Readers Guide is a quick recap of Jane; I have a longer one as a printable on Gumroad.
- I also loved that It Could Have Been Her incorporated many themes and elements from other Lisa Jewell books. I will discuss this further in the spoilers section!
- The every-shifting timeline of the book got to me a little (I have a very linear brain) so I made a chronological timeline (with inevitable spoilers) that you can check out when you’re finished.
- I really loved Jane as a main character and the way her own childhood and psychological hang-ups were incorporated into the story. “Mad Jane” turned out to be a reflective and insightful fifty-five year old (though still impulsive, which is part of her charm.
- Readers Advisory: like many of Jewell’s books, this has some dark themes that include child neglect/abusive parents as well as abduction and sexual assault (alluded to but not described on page). If these are triggering topics for you, proceed with caution and I am happy to answer questions.
- Publication date: June 23, 2026. Thanks so much to Atria books for my advance review copy.
Character List for It Could Have Been Her (Spoiler Free)
Jane and her circle
- Jane Treavally: twice-divorced fifty-something woman who lives alone in Dorset
- Dexter: Jane’s favorite stepson
- Brian, Bluto and Reggie: Jane’s dogs
- Tony: Jane’s ex husband; Dexter’s father
- Chloe Flint : Jane’s estate agent
- Helen Yaxley: Jane’s neighbor
- Rose White: Helen’s boarder, now missing
- Bill Newsome: Jane’s neighbor
- Natasha De Large: dog trainer; friend of Jane
The Black family
- Allen Black
- Annie Rich Black: his wife
- Vivienne Rich: Annie’s mother
- Jessamine Black: their daughter
- Jasper Black: Allen’s son.
- Daisy Black: Jessamine’s daughter
- Harvey Moore: Daisy’s (presumed) father
- Stuart Tucker: befriends Jessamine in the White Swan pub in the 2010s
- George and Spencer: neighbors of the Black family in the present
- Claire Connelly: one of the Black’s au pairs
- Stella Madden: rented a room to Jasper in the early 2000s
- Dr. Anthony Twist: psychotherapist/EMDR specialist in London
Locations:
- Rosebery Hall in Dorset (Jane’s ancestral “pile”)
- Thornwood in Hampstead Heath (creepy estate of the Black family)
- Seven Dials in Covent Garden (Tony’s townhouse in Central London)
What We Know About Jane Trevally from Don’t Let Him In
In brief, Jane Trevally is a supporting character in Don’t Let Him In who helps Paddy Swann’s daughter Ash investigate a scammer she knows as Nick. Ash’s mum Nina developed a relationship with Nick when he reached out after Paddy’s tragic death. Ash gets a bad vibe from him.
Jane was Paddy’s ex-girlfriend before Nina. Nina calls her “Mad Jane” because Jane didn’t take the break-up well. But since Ash is feeling a bit “mad” herself and Nina seems to be completely taken in by Nick, Jane is a sounding board and investigative partner for Ash.
After that case is over, Jane is feeling restless and at loose ends, so when a new mystery presents itself, she is all in, investigating with her new twenty-something sidekick, her stepson Dexter.
Plot Summary for It Could Have Been Her

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Please leave any other questions in the comments below!
Who do you think Daisy’s father was, Allen or Jasper? The timeline indicates Claire wasn’t pregnant before her arrival.
Whoa – I should know better than to take anything in a Lisa Jewell book at face value. It could have been either of them!
Claire definitely wasn’t pregnant when she arrived. And none of the Blacks (Annie, Jessamine, Jasper) could be considered reliable narrators. Jessamine says her mother killed Claire, Jasper says his sister did it. At the very end Jasper also says he was interested in Claire, but that he never would have hurt her.
It could have been either of them, really. I’ll add the question to the post and see what others think!
I thought the book strongly hinted that the father was Jasper—or at least that Jasper believed himself to be the father. That scene where Jasper is brought in to Claire, looking nervous and being urged forward by his father, is so full of foreboding. The scene in the book ends after Jasper approaches Claire and performs a magic trick, but we’re left to imagine what else happened in that room right after that. The whole scene felt to me like it was leading toward some sort of horrific sexual initiation (perhaps organized by Allen and/or Annie because they realized it was only a matter of time before Jasper was arrested for “pleasuring himself” in public in his clown costume, and wanted to deter that by effectively forcing him to rape Claire). Obviously the father could also be Allen, but I interpreted Jasper’s attack on Daisy to be the reaction of a childlike man confronted with the very embodiment of the guilt and shame he’s been running from.
Thanks so much – this is a very interesting point. I think I was thrown off by him being childlike, but I am convinced that he’s a candidate.
What do you make of the very end? First Jasper says that he was traumatized by the things he saw (not did). Then he seems to suggest that he has some kind of alter ego who does terrible things (like harass women; that alter ego of his could have been Daisy’s father). Finally, he’s clearly distressed that his plan to help Claire escape was thwarted by Jessamine. If Claire escaped then she could reveal what had happened to her and who was responsible, and yet he does seem to want her to escape.
There was also the photo of Jasper with his arm around Claire, in the clown mask. It seemed to me like it was being set up to reveal Jasper was Daisy’s father as well. One thing that I thought would help tie it up was the DNA test that proved the married boss wasn’t Daisy’s father. I kept expecting that DNA test to show who the father was, but it wasn’t mentioned again.
I am so glad someone brought this up because I didn’t even think of Jasper as the father. That’s also a great point about the DNA test. Though maybe it was just a test that compared Daisy’s DNA to Harvey’s? Still, even though Jasper and Allen are related I’d think a DNA test could tell which one of them fathered Daisy.