This book gives young readers a brilliant chance to get really involved with the story. Packed with clues for the reader to disentangle and with plenty of suspects the book is fast-moving and action-packed. Thomas is a ghost, from the time of Queen Elizabeth I, and he and William (his modern-day sidekick - well, all the great detectives have a sidekick, don't they?) need the reader to help them investigate the strange events around Hardleigh Manor. Being a ghost does have its benefits when detecting (as long as Thomas remembers to vanish when necessary!) and makes for a very funny story, which will be loved by children of 5+. The first in a new series - I look forward to more.