Sarah Ravencroft's History
Early life
Cover up/Fake History
Her descendant, Ben, lied about her background completely because it hid his true evil intentions as well. He portrayed her as a beautiful, pleasant-looking young Wiccan, whose kind and gentle nature led her to help many people who could not afford medical treatment.
True History
In the year of 1657, Sarah used her magic to terrorize and kill innocents. Fortunately, the Wiccans (people who worked in tune with the forces of nature for healing purposes) were able to defeat Sarah by using her own magic against her - imprisoning her inside her own spell-book. The book with her in was then put in a small box and buried near a tree. She had a grave marker that was eventually uncovered, but people, unaware of what happened to her, couldn't find any of her bones buried in the area.
Scooby-Doo and the Witch's Ghost
Centuries later, however, Sarah's descendant from the modern world tricked Mystery Inc. into helping him find her spell-book. After using it to acquire new magical powers, an insane Ben proceeded to free Sarah from her prison, believing that their combined magic would make them an unstoppable force, enabling them to reign supreme over the world. Upon being released, Sarah was initially polite and courteous towards Ben, thanking him for complimenting her and asking him his name. However, ancestor and descendant quickly got into an argument as Sarah rejected the idea of ruling the world together, and instead wanted to destroy it. She also showed how ruthless and cruel she can be, as instead of thanking and showing gratitude to Ben, her descendant, the very one who had freed her, she warned him not to cross her path.
Horrified and disillusioned by this, Ben attempted to imprison Sarah back into the book but she simply laughed in his face and revealed that only a true, virtuous Wiccan can banish her. She then proceeded to trap Ben in a magical sphere, and laughed as he screamed to be released.
Velma Dinkley then got an idea. She freed the Hex Girls, and while Dusk and Luna tried to release Mayor Corey and Mr. McKnight, Velma convinced Thorn to read the banishing spell. Initially, she refused, but then understood that she was the only one who could stop Sarah - "You still have Wiccan blood, which means only you can read the spell that will send Sarah Ravencroft back to where she came from." Velma then sent Scooby-Doo and Shaggy Rogers to get the book. The gang tried to get the book many times, but Sarah kept transforming pumpkins, a tree, and even a turkey into monsters to stop them. Eventually, the gang obtained the book, each throwing it to another person when they got captured, until it reached Thorn. Ignorant of what was really going on, Sarah laughed, stating that "the book is useless to a mere mortal", only to be outraged when Thorn's Wiccan blood allowed her to channel the book's magic to avoid being captured by a monster tree. She then flew towards Thorn. With Velma's urging, Thorn hurriedly chanted the spell, finishing it just as Sarah's fingers grabbed the book. The spell had worked: it weakened Sarah, knocking her backwards with its incredible force, and even reversed all of the spells she had cast (as her monsters turned back to normal except the turkey, which later became Oakhaven's new "big" attraction). However, just before it sucked her in, Sarah grabbed Ben's ankle and dragged him in with her, declaring that she "won't go back alone". A burning tree branch fell on the book, disintegrating it and apparently sealing away the two villains permanently. Velma, upon seeing this, solemnly said, "Ben Ravencroft's last book is one the world will never buy."