The Three Investigators and the Fifth Advent

What Lydia Candle finds in her advent calendar on December 1st gives her such a shock that she turns to the Three Investigators for help. Are the eerie messages really from her nephew, who died five years ago?

Justus, Peter, and Bob must solve the riddle of an uncanny prophecy within the next 24 days: a terrible crime is to be committed on the 5th Sunday of Advent! Day by day, the three detectives get closer to solving the case - will they make it in time?

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