> Could you plz tell me what is in this book?

It's just a book mostly about the original series of Crossroads but
there are about 20 pages at the end dedicated to the Mark II people.

You can buy it from online places like Amazon. It's by Geoff Tibbals
and normally costs £14.99, though Amazon are selling it for £10.49, a
saving of 30%. Although you can buy it in the Amazon marketplace
second-hand as cheaply as £6.74.

Go see: http://www.amazon.co.uk and do a search for "The Crossroads
Story".