Caller Unknown

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 new thriller!

'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
--
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 this is no ordinary kidnap and ransom. Getting Lucy back is just the beginning.

'As moving as it is gripping' SOPHIE HANNAH
'Utterly original' SHARI LAPENA
'Astoundingly brilliant' LUCY CLARKE
'You’ll gasp, you’ll cry, you’ll never forget this story' HOLLY SEDDON
--

READERS LOVE CALLER UNKNOWN

'An electrifying, heart pounding read.' 5* READER REVIEW

'I loved the twists and turns in the story especially the stonking great one at the end.' 5* READER REVIEW

'Gillian’s books just get better and better.' 5* READER REVIEW

'A superb thriller. One of the best books I can remember reading in recent years. HIGHLY recommended!' 5* READER REVIEW

Author: Gillian McAllister
Publication Date: 09-04-2026
Format: Paperback / softback
Pages: 400
Publisher: Penguin Books Ltd
Height (mm): 233
Width (mm): 152
Length (mm): 31

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