TWO SISTERS ON TRIAL FOR MURDER. THEY ACCUSE EACH OTHER.

WHO DO YOU BELIEVE?

'911 what's your emergency?'

'My dad's dead. My sister Sofia killed him. She's still in the house. Please send help.'

'My dad's dead. My sister Alexandra killed him. She's still in the house. Please send help.'

One of them is a liar and a killer.

But which one?

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Your favourite authors LOVE Fifty-Fifty, the follow-up to the bestselling novel Thirteen:

'A terrific writer. He has talent to burn.' Don Winslow

'Trust me - it will keep you guessing until the very end.' Ian Rankin

'Unpredictable, daring and completely compelling. Top notch writing.' Alex North

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'Intelligent, sophisticated and tense.' Mari Hannah