King & Kayla and the Case of the Downstairs Ghost

King and Kayla are going to a sleepover at Jillian and Thor’s house. They usually sleep downstairs, but not this time. Jillian says there’s a ghost down there!
What does Kayla know?
1. Jillian thinks there’s a ghost downstairs.
2. She’s only seen it at night when the lights are off.
3. She’s heard it at night and during the day.
What does King know?
Cat with No Name is outside.
How will they solve the mystery?