I see you

At first, there was just a small nondescript photo of Zoe Walker and an unknown phone number in the ads of the ads of one of the London newspapers.
Rouses? Misunderstanding? Silly joke? This is how the relatives and friends of the Zoe think.
But she herself haunts her terrible suspicion: is anyone watching her?
For how she goes to the train every morning with the same road, waits on the platform, sits on her favorite place in the carriage?
Everyone around believe that she had a paranoia.
And the next day a photo of another girl appears in the same place. And then another ...
And gradually the women whose photographs were in the newspaper become victims of cruel attacks one after another. Now Zoe is already completely sure: she is the next in the terrible list of a mysterious criminal