Ghosts do splash in puddles

Is something wrong with the plumbing or is there really a puddle ghost in the school bathroom?.

Scholastic
2006
9780439876292
book
Lexile: 
410

Holdings

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172176253316162431275773396967BPFW119BPFW067410FIC DAD100015825759371742569409
215196057103362465275773396967HIWA258HIWA900296FIC JON100015825759371742569409