In Azkaban some go mad. Bellatrix muses.

Did they really believe that Sirius was a Death Eater? 

The white sheep of the Black family, people had called him.

But not anymore, she supposed. He was just like the rest of them, there souls as Black as there names.

Sirius had screamed in his sleep, but during the day he was eerily quiet.

Sometimes he would just stare at her.

She would rather hear him scream