Wisdom's Way / The Santa Murders

Matthew, Peter and the team are baffled when people who are giving up their time to play Santa in one of Bexford's main stores, and to raise money for a children's charity, seem to die off in very strange circumstances. How are they being killed off? Why are they being killed off? Who is doing this just before Christmas? Could Christmas be cancelled for the BExfordshire Police? Can the team get to the bottom of these murders in time for Christmas? And why is George having a year off?