The link arrives in a private chat. Liam and his four best friends assume it's a prank. Until the first video plays. Realistic footage shows their friend Dave, brutally beaten. A single message appears beneath it: You have 24 hours to atone. They try to dismiss it as a twisted deepfake, but when the countdown hits zero, the real Dave calls; his voice a raw whisper, his story a perfect, horrifying match to the attack in the video. A new notification lands. A new friend is targeted. A new clock starts ticking. These videos aren't predictions; they're promises. Someone knows their secrets, and is demanding atonement. The price of their silence is watching the footage become reality, blow by horrifying blow. As paranoia splinters the group, they realise their tormentor knows exactly how to break them. But the most terrifying discovery isn't the secret they're hiding from the world. It's the ones they've been hiding from each other. A pulse-pounding thriller for the smartphone generation, The Group Chat is perfect for fans of Riley Sager, Ruth Ware, and Black Mirror.