My Best Friend Is Invisible

S4 E1: Sam Jacobs would've been happy to do his term paper about photosynthesis, but his fearless friend, Roxanne Johnson, insisted on doing it on the ghosts at Hedge House, the spookiest, most terrifying house in town. His experience at Hedge House is ghoulish enough. But when Sam leaves the haunted old house to head back home, he suddenly realizes he's not alone.