The Mark of Satan is a novel written by Ann Loring. It was first published in 1969.
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Madness at Midnight
The blackness was everywhere...brooding...evil. She was being carried in a slow, solemn procession, swathed in a white lace wedding costume, her wrists and ankles bound with black leather thongs to a heavy wooden cross. She was hanging upside down.
Suddenly, a flare of torch...a black-draped altar...a rising murmur from the hooded figures..."one of us, ONE OF US"...and then the long, spatulate fingers reaching...grabbing...ripping the dress from her body....
Julie awoke bathed in sweat. It was only a dream, a nightmare...or was it?
Involuntarily her eyes dropped to her hands. There was a soreness in her wrists--and on each, a deep bluish-black bracelet of pressure marks....