When Thackery Binx followed them in a failed attempt to save Emily, Winifred placed upon him a curse of immortality and turned him into a black cat so he could live with the guilt of failing his sister forever.
However, Thackery's father and the people of Salem came and arrested the Witches, demanding what they'd done to his children. They played dumb when Winifred's spellbook opened to reveal the Witches would return on Halloween when the moon was full if a virgin were to light the Black Flame Candle, and they were hanged.
The cottage remained empty for many years while Thackery, cursed as an imortal black cat, guarded it on Halloween to prevent an "airhead virgin" from lighting the candle. Eventually, it, in modern times, was renovated into a museum but soon shut down due to a lot of spooky things happening there.
Unfortunately, Winifred's curse at last was invoked on Halloween 1993 when Max Dennison, a skeptic who made fun of the legends, foolishly lit the Black Flame Candle, bringing the sisters back to life. In the skirmish that followed, Max stole Winifred's spellbook afer he fooled the sisters and with his sister, Dani, his love interest, Allison, and the still-living Thackery fled this cottage.
As the candle had brought the sisters back for just one night, they desperately sought to get the book back so as to brew the evil potion that would allow them to suck the life out of children and so live forever, and almost succeeded.
However, the Sanderson Sisters were delayed too long because once the sun rose, these three witches turned to dust ending Max, Dani, and Allison's nightmare once and for all.
Unfortunately, Jay and Ernie "Ice" are in still in the cages at this cottage waiting for any citizen of Salem to release them from their imprisonment by singing songs including "Row, Row, Your Boat".
The spellbook remained in this cottage. The book opens its eye, perhaps hinting the audiences about the Witches eventually returning for revenge.