Halloweentown High (television) A Disney Channel Original Movie; first airing on October 8, 2004. With the portal opened, much to the chagrin of some in Halloweentown, Marnie sets up an exchange program bringing a group of Halloweentown students to attend her human high school. She inadvertently bets the Cromwell family magic that no harm will come to them. When strange things start happening, Marnie and her family must protect the students from the legendary Knights of the Iron Dagger, and at the same time, save their own powers. Directed by Mark A.Z. Dippé. Stars Debbie Reynolds (Aggie Cromwell), Kimberley J. Brown (Marnie), Judith Hoag (Gwen), Joey Zimmerman (Dylan), Clifton Davis (Principal Flannigan), Finn Wittrock (Cody), Michael Flynn (Dalloway), Emily Roeske (Sophie).