A fake book publisher issues an errata sheet correcting chords that were never wrong in the first place. Ugo Spada has played those chords for eleven years. The man who trusted print walked the corrections like a map and found a cloakroom where a publisher should have had stairs.

Written with sarcastic and philosophical humor in the self-accusing manner of a second chair who will not correct what was right, Errata is a murder mystery about a house with no stairs, cartons of apology at Thursday rates, and print as the way a city murders the literate. Pietro Maurizi's novel treats an errata sheet as an apology that has learned to typeset.