She witnessed a murder... but nobody's dead. It's a quiet night, like any other, when Abi goes for her usual night-time run. Running is her escape from all the stresses of life, the thing she does to feel stronger than the man who once hurt her so badly. But then - as she turns a quiet corner - she sees a car hitting somebody. Rushing forward as the driver screeches off into the night, she realises the man in the road has already died. She goes to call for help, and when she returns to the scene of the hit-and-run, she finds a policeman already waiting. But there's no body. No one else is there. Abi knows what she saw. But everyone else seems to thinks she's lost her mind. Everyone except one person. Who wants her to stay silent... forever.