"Holidays Juvenile fiction." . . . . "Christmas Fiction." . . "Sabotage Juvenile fiction." . . "Sabotage Fiction." . . "Concerts Fiction." . . "Concerts Juvenile fiction." . . . . "Detective and mystery fiction"@en . . . . . "Case of the Christmas concert catastrophe"@en . . "What do glitter snowflakes, aliens, and singing have in common? Join the Gumshoe Gang at Watson Elementary as they solve the latest mystery. Lyra is so excited for the Christmas concert that she has a hard time focusing on anything else. That is, until someone starts sabotaging the concert decorations. Who would want to get the concert canceled? Why are teachers acting so strangely?--P. [4] of cover."@en . . . .