A flashback episode reveals the origins of Nick's revenge plot against the Thompsons -- and the family's role in ruining her life.

Cast: Siena Agudong, Lauren Lindsey Donzis, Kalama Epstein, Sean Astin, Melissa Joan Hart, Eddie McClintock, Molly Hagan, Ted McGinley, Samm Levine, Lori Mae Hernandez, Marco Sanchez, Kyla-Drew, Tiana Le, Sanai Victoria, Alex Poncio