Inside the bedroom-like cell furthest from the door, behind a landscape photograph of plunging karst cliffs photographed from the air, between the picture and the frame backing, there's an envelope hidden. Inside the envelope is a paper folded in half with a short note written in a rather old-fashion cursive.

Dearest L-,

I know how much you didn't particularly like being noticed or have attention called to yourself, so perhaps you'd have rather been peacefully forgotten. But I haven't forgotten you.

Yours,
N-