Everyone This Christmas Has A Secret

Cunningham's third case begins when a body drops dead at his feet during a Christmas pageant. The whole case is like an advent calendar, but getting there won't be easy. Because this Christmas, everyone has a motive. So it's not a matter of who wanted the victim dead, but who got there first. A suspect covered in blood, without a memory of how it got there and a murder committed without setting foot inside the room where it happens.