" 'The House was built from Nothing by the Great Architect of All and was populated with servants to do Her work. Then She made the Secondary Realms, which you would call the Universe. The House and its servants were dedicated to recording and observing this great work, and did so faithfully for uncounted aeons. Then the Great Architect went away, leaving a Will to ensure that Her work, and the work of the House, would continue as it should.'

'Right-'

'BUT IT DID NOT!' "

"They had tried to destroy the Will, but that proved to be beyond their power. So they broke it, in two ways. It was broken physically, torn apart, with the fragments of heavy parchment scattered across both space and time. It was broken in spirit because not one clause of it had been fulfilled."

-both from Mister Monday, by Garth Nix

This Monday was going to be the last of Arthur Penhaligon's life. He was going to have a fatal asthma attack. Death by gym class.

But instead, he got the Key. It saved his life.

Because the first clause of the Will of the Architect has escaped, and it managed to trick Mister Monday, the first of the Trustees, into handing over the first Key to a Rightful Heir. Arthur was conveniently placed.

The problem is, the Will didn't get Mister Monday to hand over all of the key, only the lesser half. And now he wants it back. Which means Monday is sending a whole lot of servants to try to get the Key. Servants that do things like cause people near them to get terribly sick.

Arthur doesn't like that. So he goes to the source of all this weirdness, the huge House that's recently become overlaid on a block of suburban homes.

Once in the House, Arthur is contacted by the first clause of the Will, and its somewhat unwilling servant Suzy Turquoise Blue. Turns out the only way Arthur can fix things on his world is to get the whole Key and claim ownership of Monday's domain, the Lower House.

And with a great deal of difficulty, Arthur does.

Of course, the rest of the Trustees aren't necessarily happy with this new threat to their domains. And the Will isn't happy with Arthur only claiming one part of the House.

Which means he's got to deal with each of the Morrow Days in turn, and claim their Keys, and free the other six pieces of the Will.

And he'd like to try to stay mortal through it all.

This is going to be a very busy week.

The books of the series are:

Mister Monday

Grim Tuesday

Drowned Wednesday

Sir Thursday

Lady Friday

Superior Saturday (unreleased at the time of writing)

Lord Sunday (unreleased at the time of writing)