Avsnitt 4

The ninja were often given the important mission of infiltrating enemy territory and bringing back key information. Meanwhile, their own residences were cleverly rigged to thwart intruders and hide the information they'd acquired. In this episode, we'll examine the secrets of their residences, including trap doors, lookout posts, sword compartments, and hanging ladders, using action-packed reenactments . We'll also examine the psychological effect of these residences.