Later, Melissa is waiting for Nick at his place. Waiting to apologize. Also, there is a really great song playing. It sounds a little like "We Belong" by Pat Benatar, so, YES. She says that she doesn't have the right to be jealous, since she's not his girlfriend. They're good. Whoever is doing Nick's hair and lipgloss deserves an Emmy.
Diana and Adam are meeting at The Boathouse. She did a little research because the mark on Heather's wrist concerned her. She found something in her book that referenced black magic in regards to the sign. Demons. It looks like Heather was possessed and the spell was used to keep the demon from escaping. Adam wants to call Cassie. Diana doesn't think it's necessary because Cassie didn't perform the spell, but he says that she still needs to know.
Cassie and Faye are at Cassie's place, sans Granny again. Oh, now I get it. When Cassie said her grandmother was working a double shift, that was a way to get her out of the way for later too. Because working at 4 in the afternoon isn't exactly burning the midnight oil. Clunky. There's a knock at the door and Cassie goes to answer it but just finds the door opened. She locks it and goes back inside. She's walking towards the kitchen to get the non-carb snacks that Faye requested when Heather pops out from behind a corner. Yikes! She asks for Amelia and starts scratching her skin. She says that Amelia is dead and she starts crying. She tells Heather that she's her daughter and Heather says that she tried to help Amelia take her away from there. Heather says that, the night of the fire, Amelia was trying to protect all of them, but evil still got inside of her. She says it hurts, then she throws herself against a wall. She says that Amelia couldn't get rid of the evil, but she made the pain go away. Now it's back. Oops. Then, she throws herself to another wall and cries for help. She writhes on the ground in pain -- damn this lady is really good, though her sassy blunt cut after 16 years in a rocking chair is a little unrealistic. Hey wig crew, get to work!
Diana and Adam are trying to call Cassie and Faye answers. Faye makes sexy jokes. Downstairs, Heather comes to and Cassie realizes that she undid a spell that was intended to help Heather. She says that she looked for Amelia at the boatyard the night of the fire. Then, she says that where there are witches, evil follows. The same is true of matching track suits. The bad folks were trying to use the Circle's power and one of the demons got inside of Heather. She starts to freak out again, then she throws Cassie against a wall and knocks her out. Faye comes downstairs with the phone and finds Cassie, just as Heather approaches with a fire poker. So, naturally, running and screaming ensues. Heather fucking flies up the stairs after her. This is not good. She tries to get out of the window, as Nick and Melissa are making up and out across the way. They see what's going on and run to help as Heather beats the hell out of Faye. Cassie comes to and helps Faye and they try to run out of the house. Not so fast. Demon Heather makes all of the lights go out. They open the front door and Nick and Melissa are there. The girls are about to escape when Heather grabs Cassie and throws her against yet another wall. Then, Nick gets in the middle and squares off with her.