After a heavy night out, Becky misses her train home. Stranded at an empty station, she uses the Help Point on the platform but hears a voice on the other side - asking for her help.
The Harroway's mad brother, Martin, has died. Amongst his possessions is an illustrated children's book containing a strange warning about one of the characters within it: Once you've seen John, he can see you. And he's coming to get you.