Bookshop trick

I have read the book called Bookshop trick. It's written by John Escott.

It's about a woman (Jan) who works in a bookshop at Saturdays. Mr Fray owns the bookshop.
Mr Fray likes Jan and is always happy too see her. Sometimes Mr Fray gives her books too read and Jan's favourite books are mystery stories.
One night Mr Fray asks Jan if she can close the shop because he would put away the money.
When Jan wanted to shut the door a man came in. The man pushed down Mr Fray and Jan down the stairs and tied theirs hands and feets with a strong string. Then he starts too look after the money. Then Jan sees a the book called "The Bookshop Murders on the floor and remembers what they do in the book and she fools the man and pushes the bookcase over the man. And the man stops to move then Jan starts to untie Mr Frays hands. They telephones the police and they came and took the man away. The money was in a book..so Mr Fray used a book insted of a safe. And that is a trick out of the book Steve Devere.