Onedayinthepark,theAldens’dog,Watch,comesacrossamysteriousboxwithanoteinside.“Congratulations!“thenotesays.“You’vefoundit!“Theboxispartofafunnewtreasure-huntinggame,andsoonHenry,Jessie,Violet,andBennyarelookingallovertownforcleverlyhiddenboxes.Butthey’renottheonlyonesonthetrailforclues!Whenseveralofthetreasureboxesgomissing,thegameisruinedforeveryone.Whowouldstealtheboxes--andwhy?
