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

A ghost can write a transparent letter, translucent to living beings but apparently legible to other ghosts.[1] Sir Patrick Delaney-Podmore wrote one such letter in October of 1992 and sent it to Nicholas de Mimsy-Porpington.[1]


Notes and references

  1. 1.0 1.1 1.2 1.3 Harry Potter and the Chamber of Secrets, Chapter 8 (The Deathday Party)
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