This is a fantastic book that Siobhan Dowd has written.

It is the first book that I have read by this author and it is absolutely excellent and easy to read! 

It is about two children called Ted and Kat who's cousin comes to stay.Ted and Kat take there cousin (Salim) to see and have a ride on the London Eye. The pod the three children were in rose from the 

                      ground...25 minutes later the pod doors

                      open but where is Salim?

                      I would give this book 98 out of 100!