Three people live. Three people die. You make the choice.

Like any mother, Chrissie wants to protect her family. She would do anything to keep them safe. So when a mysterious stranger turns up at her door, offering to prevent the deaths of the people she loves, it sounds too good to be true. The only problem: she must choose someone to die in their place. A substitute.

When her daughter Holly has a terrible accident, Chrissie has no option but to enter the programme. In that horrifying moment, she would do anything to save her. But even after Holly makes a miraculous recovery, Chrissie is convinced it’s just a coincidence. After all, who can really control the laws of life and death?

But as the dangers to her family escalate and her chosen substitutes begin to disappear, Chrissie finds herself in an underworld of hidden laboratories and secretive doctors. And the consequences of playing by their rules are far deadlier than she ever imagined…

* * * * *

What people are saying about Substitute

“Wowzers – I’ve just finished reading a proof of Susi Holliday’s twisty-turny thriller SUBSTITUTE and it’s epic!! Mind-bending, pulse-pounding, techno thriller brilliance! Perfect for fans of John Marrs – The One, JP Delaney, Blake Crouch.” – Steph Broadribb

“A chilling and addictive tale of the price of good intentions, devastating choices and science gone wrong. Frankenstein meets The Chain in Susi’s most powerful thriller yet.” – Heleen Kist

“Wow!!! I’ve just finished reading Substitute by Susi Holliday & have barely drawn a breath for an hour – and have done little else since I started reading it last night. My heart is actually racing! A twisty, brilliantly paced techno thriller with plenty of heart. Brilliant!!!” – Victoria Goldman

“Susi Holliday knocks it out of the park with this book. It’s everything you want in a thriller – imaginative, credible and engaging; rocketing relentlessly towards a gut-wrenching conclusion as the stakes grow higher and higher…Brilliant.” – Louise Voss