This document is an introduction to a book titled "The Humanoids" about reported encounters with unusual human-like beings. It summarizes that for over 20 years, dedicated researchers have studied unidentified flying object (UFO) reports but still do not know where UFOs come from or why they are here. In contrast to most UFO sightings which are distant lights, reports of landings and encounters with occupants could provide more definitive answers. The book aims to present over 300 such reports to look for patterns and clues, as landing and occupant cases offer a different and more substantial proposition than distant lights alone. It also critiques the limited and prejudiced study of UFOs by the Condon Committee which largely