Miranda's life is starting to unravel. Her best friend, Sal, gets punched by a kid on the street for what seems like no reason, & he shuts Miranda out of his life. The key that Miranda's mum keeps hidden for emergencies is stolen. & then a mysterious note arrives:
'I am coming to save your friend's life, & my own.
I ask two favours. First, you must write me a letter.'
The notes keep coming, & Miranda slowly realises that whoever is leaving them knows things no one should know. Each message brings her closer to believing that only she can prevent a tragic death. Until the final note makes her think she's too late.