Caller Unknown

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A road trip across America with her teenage daughter was meant to be much-needed bonding time for Simone before Lucy leaves home for university.

But on the first night of their stay, in a cabin deep in the Texan desert, Simone wakes to find Lucy missing and a mobile phone in her place. The phone rings and the voice on the other end issues instructions: Don’t tell the police. Come to this location. Be prepared to do a deal…

There is nothing Simone wouldn’t do to save her daughter. Hide the truth. Commit a terrible crime. Become a wanted woman.

But there’s one thing Simone hasn’t considered.

What if this is just what the kidnappers want?

An unputdownable adventure that was both heartwarming and thrilling! Everything I've come to expect from Gillian McAllister!
FREIDA MCFADDEN

About Gillian McAllister

Gillian McAllister is the Sunday Times and New York Times bestselling author of nine stand-alone novels. Her books have been selected for the Radio 2 Book Club, Reese's Book Club and the Richard & Judy Book Club. Her previous novel, Wrong Place Wrong Time, was a Waterstones Thriller of the Month and was shortlisted for The British Book Awards Crime & Thriller Book of the Year and the Theakston Old Peculier Crime Novel of the Year. Gillian's books are published in thirty-eight languages.

Details

Imprint: Penguin
Published: 09/04/2026
ISBN: 9781405957267
Length: 416 pages
Price: £8.99

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Caller Unknown

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An unputdownable adventure that was both heartwarming and thrilling! Everything I've come to expect from Gillian McAllister!

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,

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

An utterly original kidnap story that throbs with tension—hard to put down.

Utterly HOOKED! I was journeying through that desert, living every twist, turn and surprise. Immersive, heart-pounding and astoundingly brilliant.

As moving as it is gripping, this superior thriller is, more than anything, a testament to the power of a mother’s love

A propulsive, page-turning thriller that's the very definition of a "one-more-chapter" novel. What sets it apart is its beautiful characterisation of maternal love and sacrifice. It's a sure-fire bestseller.

Caller Unknown sets a new standard for modern thrillers - you’ll gasp, you’ll cry, you’ll never forget this story.

PRAISE FOR GILLIAN MCALLISTER

An incredible, gripping, thrilling read

About Gillian McAllister

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