Magic Forums

For a little while I've ignored the thing in my house. It has closed and opened doors, including locked ones. Recently, it started stressing out the animals and family member living inside. My cat started getting jumpy form the slightest of sound or touch. He's never done this before. My sibling can't sleep at night because she feels like she's being watched and very unsafe. Can someone please tell me what this is and how I get rid of it. Thanks.