Parents need to know that because the main characters are solving mysteries, adults will appear as villains, and the children on the team will occasionally be in mild peril. It's all quite tame, but it could worry younger kids who aren't familiar with crime or the baser motivations of the human heart -- here pretty much limited to money, winning, and general mean-spiritedness.
Positive messages:Standard moral lessons regarding teamwork and good citizenry.
Violence & scariness:Some manhandling of characters, threatened use of hockey sticks and pucks. Weapons might appear but not be used.