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Win a signed copy of Caller Unknown by Gillian McAllister and a necklace from LOVELOX!

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Caller Unknown and Lovelox

We’re giving one lucky reader the chance to win a signed copy of Caller Unknown, the gripping new thriller from Gillian McAllister, along with a beautifully crafted locket from LOVELOX.

In Caller Unknown, a mother–daughter relationship is pushed to the most extreme test imaginable. Tense, emotional and impossible to put down, it’s a story that explores just how far a parent will go when everything is at stake and reminds us that your children are only ever on loan to you.

To celebrate the powerful bonds at the heart of the novel, we’ve partnered with LOVELOX, whose engraved lockets are designed to hold meaning, memory and connection close. Thoughtful and personal, each piece is a lasting reminder of the relationships that shape us.

About Lovelox Lockets

LOVELOX creates beautifully crafted, personalised jewellery designed to celebrate life’s most meaningful moments. Each piece is made to hold memories close - celebrating love, connection, and the stories that matter most.

The prize:

One lucky competition winner will win:

How to enter: Simply fill out the form below with your details.

Competition closes 23:59 BST on 9th May 2026.

Good luck!

Scroll down to view the full competition terms and conditions. By entering the prize draw you confirm acceptance of these conditions.

By signing up, I confirm that I'm over 16. To find out what personal data we collect and how we use it, including for our recommendations, please visit our Privacy Policy.

TERMS AND CONDITIONS

  1. No purchase necessary to enter the prize draw.
  2. This prize draw is open to UK residents aged 18 years or over, with the exception of employees of the Promoter, their families, agents and anyone else connected with this promotion.
  3. Entries must be received by 23:59 BST on Saturday 9th May 2026. The Promoter accepts no responsibility for any entries that are incomplete, illegible, corrupted or fail to reach the Promoter by the relevant closing date for any reason. Proof of posting or sending is not proof of receipt. Automatically generated entries and entries via agents or third parties are invalid and will not be counted. Entries become the property of the Promoter and are not returned.
  4. Only one entry per person. No entrant may win more than one prize.
  5. To enterfill in your details on the online form.
  6. All correctly completed entries will be entered into a prize draw which will take place on 10th May 2026. The first entry drawn will be the winner.
  7. The prize for the winner is 1 x signed hardback of CALLER UNKNOWN by Gillian McAllister (9780241648056) and one necklace of their choice from LOVELOX up to the value of £150, not including personalisation and delivery (https://www.loveloxlockets.com/).
  8. Other than those specified above, the promoter shall not be liable for any costs or expenses arising out of or in any way connected with this prize and does not accept any responsibility for any damage, loss or disappointment suffered by the winner as result of accepting this prize.
  9. Prizes are subject to availability. In the event of unforeseen circumstances, the Promoter reserves the right (a) to substitute alternative prizes of equivalent or greater value and (b) in exceptional circumstances to amend or foreclose the promotion without notice. No correspondence will be entered into.
  10. Where an entrant has opted in for their personal data to be shared with LOVELOX for their newsletter, they agree that the promoter may transfer their personal data to that company for that purpose and LOVELOX will be deemed to be the data controller of the personal data transferred to them. For information on how they process that data please see their privacy policy (https://www.loveloxlockets.com/policies/privacy-policy). The promoter will remain the controller of any personal data it retains for the purpose of the competition and any newsletter opt-ins to its own newsletter.
  11. The winner will be notified via email by 30th May 2026. The winner must claim their prize within 30 working days of the Promoter sending notification. If the prize is unclaimed after this time, it will lapse and the Promoter reserves the right to offer the unclaimed prize to a substitute winner selected in accordance with these rules.
  12. We will make the winner’s name and county available on request to the following email address emorley@penguinrandomhouse.co.uk (please state the name of the competition in the subject heading 10 weeks after the closing date).  If you do not want your name and county to be made available in the event that you win, please let us know by emailing emorley@penguinrandomhouse.co.uk. Please note we are required to make the winner’s details available to the ASA if requested.
  1. By entering this competition, all entrants agree to the use of their personal data by the Promoter for the purposes of running the competition as detailed in these terms and conditions.  Details on how we process the personal data of entrants can be found in our Privacy Policy (http://penguin.co.uk/company/about-us/notices/privacy-policy/full-privacy-policy.html)
  2. Promoter may disqualify any entrant whose entry does not comply with these terms and conditions (in Promoter’s sole opinion) or who, in Promoter’s sole determination, has acted in a manner that is fraudulent, dishonest or unjust to other entrants including, without limitation, tampering with the operation of the prize draw, manipulating or rigging votes, hacking, deceiving, cheating or by harassing or threatening other entrants or a representative of Promoter. 
  3. By entering the prize draw each entrant agrees to be bound by these terms and conditions.
  4. The Promoter is Penguin Books Limited, One Embassy Gardens, 8 Viaduct Gardens, London SW11 7BW.
  5. These terms and conditions are governed in accordance with the laws of England and Wales.