Beware of What You Invite Into Your Home

The Next Gen cousins Fred, Roxanne, Lucy and Molly are hanging out one summer when Fred claims to have found his namesake's journal. It turns out that the journal actually belonged to Percy... or did it? As Molly keeps reading through it, she starts to find disturbing things, and even after she destroys it, it ends up coming back. And that never means good news, does it?