- Autor: Simon Betterton
- Editorial: Burlington Books
- Nº Registro: 22110
- Género: Novela
- Edades: Jóvenes
- Tipo: Normal
John is a school security guard. It’s a routine job, but one day, strange things start to happen. He has listened “Footsteps”, Mary, one of the teachers, disappears; then John loses his job unexpectedly. He decides to discover what’s happening. But can he find Mary? Who is the mysterious stranger? And what does the echo in the corridor mean?
