Mystery of the Toxic Playground

Beware the toxic playground on Sycamore Street!Josh can't stop playing his new video game even as Noah and Olivia are hard at work on a new case. Neighborhood kids are getting sick at the playground, including Olivia's little sister Emily!They have the tools they need to solve the case, but now the city has fenced off the site. How far will they go to find out the truth?A fast-paced chapter book m...