Caller Unknown cover art

Caller Unknown

The No.1 bestselling thriller from the author of Wrong Place Wrong Time

Preview
This Season's Biggest Deal

£0.99/mo for 3 months + £10 Audible bonus

Auto-renews at £5.99/month after 3 months. Cancel monthly.
Get this deal
Offer ends on 28 December, 2026.
More purchase options

Caller Unknown

By: Gillian McAllister
Narrated by: Juliet Rylance
Get this deal

Auto-renews at £5.99/mo. after 3 months. Cancel monthly. Offer ends 28 December, 2026.

Buy Now for £13.79

Buy Now for £13.79

This Season's Biggest Deal | £0.99/mo for 3 months + £10 Audible bonus

£5.99/mo after 3 months - terms apply. Cancel monthly
Summary

They Took Her Daughter. Now She’ll Break Every Rule to Get Her Back.

From the Sunday Times bestselling author of Famous Last Words and Wrong Place Wrong Time comes an unmissable thriller.

A READ WITH JENNA BOOK CLUB PICK

Your last words to your teenage daughter were, ‘Sleep well’. By the next morning, she has vanished.

Her bed not slept in, an unfamiliar phone in her place. Before you have time to catch your breath, it rings.

CALLER UNKNOWN

Someone has taken your daughter. They don’t tell you where. They don’t tell you why.

Only that you must do what they say to ever see her again. Do not contact the police. If you do, they will kill her.

You have a choice: do you risk contacting the authorities anyway?

Or, do you take the law – and your daughter’s life – into your own hands?

'Unputdownable' FREIDA MCFADDEN

'The best of the best' LISA JEWELL

'Masterful' ANDREA MARA

'Tense, twisty, and an emotional gut punch' KARIN SLAUGHTER

'Absolutely superb' CLAIRE DOUGLAS

© Gillian McAllister 2026 (P) Penguin Audio 2026

Crime Thrillers Psychological Suspense Thriller & Suspense
adbl_web_anon_alc_button_suppression_t1

Critic reviews

An unputdownable adventure that was both heartwarming and thrilling! Everything I've come to expect from Gillian McAllister! (FREIDA MCFADDEN)
Gillian McAllister has done it again! This is such a clever, tense and twisty book, I inhaled it in under a day. The pacing is perfection and the twist, when it comes, is deeply satisfying, but it is the characters that elevate Gillian's books into the best of the best, (LISA JEWELL)
Tense, twisty, and an emotional gut punch—CALLER UNKNOWN is a one-sitting read. (KARIN SLAUGHTER)
A taut, heart-in-mouth action thriller. With Gillian McAllister’s trademark beautiful writing, not only is Caller Unknown a wonderfully atmospheric and twisty read, it’s also a powerful ode to motherhood. I couldn’t put it down. Absolutely superb (CLAIRE DOUGLAS)
Chilling, immersive, atmospheric and poignant; Caller Unknown is beautifully told, with a wonderful trademark McAllister twist that fans will hope for but still not see coming. Masterful. (ANDREA MARA)
An utterly original kidnap story that throbs with tension—hard to put down. (Shari Lapena)
Another terrifically tense thriller from a writer at the absolute top of her game (ERIN KELLY)
Utterly HOOKED! I was journeying through that desert, living every twist, turn and surprise. Immersive, heart-pounding and astoundingly brilliant. (LUCY CLARKE)
Utterly compelling, gripping and so entertaining! (LIZ NUGENT)
As moving as it is gripping, this superior thriller is, more than anything, a testament to the power of a mother’s love (Sophie Hannah)
All stars
Most relevant
I’ve read all of Gillian’s books, this one might be the best yet! Outstanding! You will feel all the emotions!

Phenomenal!

Something went wrong. Please try again in a few minutes.

Not a fan of this one. Normally devour Gillian’s book but this one wasn’t for me. Long, drawn out and at times tedious. Narrator was fine although posh!

Disappointing

Something went wrong. Please try again in a few minutes.

Saw this one get some critical reviews so went in with low expectations but I really enjoyed it. Thought the writing style was very good. It's a bit sentimental for my tastes, and I also found the mother to be really quite creepy and intense about her daughter at times. although her feelings towards her daughter were kind of the point of the book. overall this was well-written, pacey, and I finished it in a day.

Great

Something went wrong. Please try again in a few minutes.

I listen to hundreds of books a year, and this was by far the worst narrator I’ve ever listened too which was such a shame . Had I not read one of Gillian Mcallister’s books before I would’ve given up very early on.

The worst narrator but great story

Something went wrong. Please try again in a few minutes.

The narrator was beautiful but maybe not for this story. I do love Gillian’s books, this one was underwhelming, so I was disappointed with this one - sorry Gillian

It was long winded and quite boring!

Something went wrong. Please try again in a few minutes.

See more reviews