Friday is here! The race is on to find the secret of the Middle House. The fifth eagerly awaited installment in Garth Nixs best selling fantasy series The Keys to the Kingdom. Arthur Penhaligons adventures in the House get ever more perilous as the week unfolds. On the fifth day there was fear! Four of the seven Trustees have been defeated & their Keys taken but for Arthur the week is still getting worse. Suzy Blue & Fred Initial Numbers Gold have been captured by the Piper & his New Nithling army still controls most of the Great Maze. Superior Saturday is causing trouble wherever she can including turning off all the elevators in the House & blocking the Front Door. Arthur cant even find out what is happening back home. All he knows is that Leaf isnt on earth any more. Shes missing & so are hundreds of other people who were transferred from regular hospitals to a private institution run by a Doctor Friday. From there they have been taken somewhere else in the Secondary Realms for Lady Fridays own horrible purposes. Amid all this trouble Arthurs mother is also missing & he must weigh up an offer from Lady Friday that is either a cunning trap for the Rightful Heir or a golden opportunity he must seize -- before Superior Saturday or the Piper beats him to it.