The Uncanny X-Men #143

When Kitty Pryde is left behind at the mansion alone, she's attacked by a N'garai demon. Can the newest X-Man handle the villain all by her lonesome?It’s Christmas Eve but all of the X-Men are busy and leave Kitty behind at the mansion alone. Scott Summers calls from Florida, where he starts to work as sailorman for Lee Forrester. Later the mansion is attacked by a N’garai demon. Kitty tries to escape and phases through floor and walls but the demon keeps up. She lures it into the Danger Room, but it trashes every single weapon that the room throws at it. Finally Kitty escapes into the Hangar and manages to fry the demon with the Blackbird’s afterburners. Later the X-Men return with Kitty’s parents as a surprise, they are proud how well she handled the situation.John Byrne ends his penciling duties with this issue.