[There were no post-its to be found - Crowley didn't think to check the small pile of ashes in the waste-paper basket - and so the note is scribbled on an old 'Fell Books' letterhead.]

Aziraphael -

If a note is left, but nobody comes home to read it, does it still deliver a message? Or something like that. Something's come up, and I'm needed at work.

Sorry.

- Crowley