Trickery Treat  (English, Paperback, Burge Constance M.)

Set right after the finale, in Trickery Treat the family decides it's safe to let Wyatt and baby Chris celebrate a real Halloween with trick or treating followed by a party for neighbours and friends. However, a magical miscalculation creates an original Halloween or Samhain (which is of Celtic roots) when the barrier between the living and dead is lowered and the spirits of the dead walk the earth. The sisters and family are threatened by returning evil mortals, demons and other badies they killed. Can the Power of Three overcome once again?