Available July 3rd 2025
PRE-ORDER UK
I DID WARN HER
When there’s blood in the water, a feeding frenzy is sure to follow…
I Did Warn Her is a cunning locked room mystery set on a billionaire’s yacht, by the author of last year’s sensation She Started It.
The Ophelia is your typical billionaire yacht: ridiculously luxurious, owned by a ruthless money man, and staffed by a crew whose only job is to indulge the guests’ every wish.
Model-gorgeous Sasha is a last-minute hire for a weeklong Atlantic crossing. She joins fellow stewardesses Jade, Imogen, Euphemia, and Lola. The Ophelia’s stewardesses are almost identical—blonde and model-gorgeous—and all were lured to the Ophelia by high wages and a chance to leave their problems behind when they set sail. But despite its sleek opulence, the Ophelia isn’t as heavenly as it seems. A stewardess on the previous charter died under mysterious circumstances, the guests’ expensive jewelry keeps disappearing, and the crew grows steadily more and more suspicious of one another.
Then the yacht’s owner brings aboard his best friend and two more women, also beautiful. Also hiding something.
When a crew member turns up dead after a night of partying, everyone on the yacht is a suspect. Who is the jewel thief? Who is the murderer? What will happen when the lights go out, and the crew and the guests are finally on equal footing?
Endlessly twisty and delightfully voyeuristic, I Did Warn Her is a whodunnit on the high seas, where the dark secrets of the ultra-wealthy have nowhere to hide.
Praise for I Did Warn Her
Shimmering escapism. The perfect beach thriller. Consider yourself warned.
Catherine Steadman, New York Times Bestselling Author of Look in the Mirror
From its pitch perfect prologue to its murder-filled middle to its explosive ending, I DID WARN HER entertains in the most delicious way. Filled with mean girls, billionaires behaving badly, and wild chapter cliffhangers that will have you reeling, this floating locked-room thriller twists through secrets and misdirects, keeping you guessing and leaving you excited to see what Gilbert’s devious mind comes up with next.
Darby Kane, #1 International Bestselling Author of What The Wife Knew
Slick, sinister, and utterly unputdownable – I DID WARN HER is perfect for readers who like their thrillers glossy, fast-paced, and impossible to second-guess.
Emily Freud, Author of Her Last Summer
With all the drama and intrigue of Below Deck and the glamour of White Lotus, do not miss out on this captivating thriller. An expertly crafted locked-room mystery in a unique setting – you won’t be able to turn the pages fast enough the reach the stunning conclusion. A must-read this summer.
Rhiannon Barnsley, Author of The Clique
Gilbert intertwines multiple backstories, all converging in one sensational storyline. The murder-mystery mashup of Hercule Poirot-meets-Below Deck plus superyacht vacation vibes and a writing style similar to Lucy Foley’s make this a perfectly juicy summer read.
Booklist, Starred Review
A superyacht becomes a crime scene in this diverting thriller…Gilbert has the mechanics of the locked-room mystery down, and orchestrates the story’s familiar parts into a satisfying symphony of tension. It’s tough to put down.
Publishers Weekly
I DID WARN HER is Below Deck with a body count, and I loved every minute of it. Intricately plotted and devilishly dramatic, with a claustrophobic setting and a final twist to kill for, I DID WARN HER is everything I want in a thriller. I can’t wait to see what Sian Gilbert does next!
Sara Ochs, author of The Resort
Sexy, sordid, and scandalous. Gilbert delivers a page-turning thrill-ride that will keep readers tearing through pages and guessing until the very end.
Asha Elias, author of Pink Glass Houses
Set on a glamorous and glitzy billionaire’s yacht, I DID WARN HER was like binging episodes of Below Deck – a thoroughly entertaining locked room mystery with characters you love-to-hate and a great final twist.