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Saffy is waiting to go into an important meeting when she receives a text message from her best friend, Leona: Can’t speak… don’t text or call… pls just come

Of course, she races to her friend’s house. But when she arrives, she notices something strange.
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Leona answers the door, and insists everything's fine. She doesn't know anything about the message.
Six hours later, Saffy gets a knock on the door. It's the police. Leona is missing, with her young child. There's blood everywhere. And Saffy was the last one to see them alive...