THE 13th FLOOR !!!

I haven't read most of this book but I have read enough to know what the book is about. So this book is about a girl ( Abby ) and a boy ( Todd ) they live in a hotel but the hotel doesn't have a 13th floor but Todd and Abby still believe that theres a 13th floor so they go in the lift and go from 1, 2 , 3 , 4 , 5 , 6 , 7 , 8, 9, 10 , 11 , 12, 14 but the lift goes slow when it gets in between 12 and 14 so there must be a 13th floor but theres only one way at only one time at midnight when theres a rocking horse moon. Who knows if they'll ever get out of the 13th floor.