What are jinn and devils? Where do they live? How do they impact our life? This pioneering book draws from the Qur'an and hadith in answering questions about the critical Islamic belief in Al-Ghaib, the unseen. It discusses the wisdom behind their creation, interaction with humans, eyewitness accounts, need for knowledge about them and common misconceptions about their power. The book argues that despite the dominant secular worldview that dismisses any un-observable phenomenon as non-existent, humans believe in the unseen. Furthermore, it is important to understand their place in creation to avoid satanic influences and come closer to Allah.