Dementors and Polyjuice Potion was Regulus and Kreatcher

[Donna]

No: HPFGUIDX 153516

According to Chapter 35, page 684, of Goblet of Fire (US Edition), Dementors
are blind.  When Barty Crouch changed places with is Mother, all the
dementors could sense was "one healthy, one dying person entering Azkaban. 
The sensed one healthy, one dying person leaving it."  The polyjuice was to
prevent any watching prisoners from seeing who was leaving.

Also, according to the book, if a polyjuiced person dies, that person
retains the polyjuiced appearance after death.

Donna

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