These are fun filled, action packed, mystery adventures about treasure hunts, pirates, caves, mountain men, monsters, scary monsters, possessed houses, good & bad ghosts, girls, boys, dogs, cats, rats, bats, secret agents, spies, kid reporters, good/bad guys, graveyards, cave boys, dinosaurs, saber-tooth tigers, notes in bottles, haunted mansions, secret passageways, stormy nights and action packed days. Jumping, being chased, hiding, falling, (a lot of screaming and running,) setting booby traps, spying on people, inventing things, investigating, solving problems & mysteries. They learn how to depend on each other. They blow up science labs, sword fight with pirates, build rafts, swim, dive off yard arms, capture ghosts, and still manage to stay alive so I can bring them all back again!