Ghost letter

"...folding a transparent letter as he spoke and tucking it inside his doublet."

- Description

A ghost can write a transparent letter, translucent to living beings but apparently legible to other ghosts. Sir Patrick Delaney-Podmore wrote one such letter in October of 1992 and sent it to Nicholas de Mimsy-Porpington.

Appearances

 * Harry Potter and the Chamber of Secrets