Wormtail pulled open the robes on the ground, revealing what was inside them, and Harry let out a yell that was strangled in the wad of material blocking his mouth.
This time Sophie really did scream, but only for a second because very quickly the huge hand clamped down over her blanket and the scream was smothered by the bedclothes.
I have only to take and throw this half-dead thing on the bed, smother him a moment with the pillow, and the most careful examination will find no trace of unnatural death.