Books in Toby books series

Two young boys, Alex and Todd, want to help the police find a marijuana grow house and capture the drug dealers operating in their town. Toby and Alex’s new step-father, Doug, must find a way to stop them before they find themselves in real danger with real bad guys. It takes a visit to a haunted house, and being captured by the bad guys to convince the boys that they really like being kids, instead of pretending to be cops.