This book investigates the religious practices of the Minoan and Mycenaean civilizations and traces their continuity into later Greek religion. Martin P. Nilsson, a renowned scholar of Greek religion and mythology, draws upon archaeological evidence from Crete and mainland Greece, as well as textual analysis of early Greek literature, to reconstruct these ancient belief systems. The work argues that a significant substratum of Minoan-Mycenaean religious thought and ritual persisted, shaping the development of Olympian and chthonic cults in the Hellenic world.

Martin P. Nilsson's work is a foundational text in the study of ancient Aegean religions, widely respected for its comprehensive scholarship and meticulous synthesis of archaeological and textual evidence. Scholars have consistently praised its detailed analysis of the connections between Bronze Age Crete and Mycenaean Greece and their influence on later Greek religious traditions. While subsequent archaeological discoveries and theoretical approaches have added nuance, Nilsson's core arguments regarding the survival of Minoan-Mycenaean religious elements remain influential. The book is considered an essential resource for understanding the deep roots of Greek religious thought.