A bed-time story with a twist. "Once upon a time - there was an extra special train with a top secret load." Electric, diesel and finally steam engines, all help to make sure the special delivery arrives on time, but what will it be?...This "Little" Peter's Railway book is aimed at younger readers (3 - 6 years), there is some simple engineering buried in the story and 12 watercolour pictures by John Wardle.