Whoever Slew Auntie Roo?

A demented widow lures unsuspecting children into her mansion on a Christmas Eve party, but when two orphan siblings sneak in, she sets her sights on one who bears an uncanny resemblance to her late daughter. As they try to escape the clutches of the unhinged "Auntie Roo," Christopher and Katy must convince everyone that their sister has been kidnapped - all while navigating the dark secrets of the mansion and Auntie Roo's sinister intentions.