Secrets of the Dead: The Lost Gardens of Babylon is a riveting documentary that sets out to unravel one of the world's prominent ancient enigmas - The Hanging Gardens of Babylon. Largely fueled by archaeological findings, historical texts, expert viewpoints, and advanced technology, the film restarts fresh explorations into a puzzle that has stimulated man's curiosity for centuries and offers unexpected revelations.

The Hanging Gardens of Babylon have been glorified in ancient writings as one of the Seven Wonders of the World but their existence, location, and creators remain subjects for debate among historians and archaeologists. They have been described as a stunningly lush, ascending series of tiered gardens comprising exotic plants and trees, waterfalls, and structures, purportedly built in the ancient city of Babylon, near present-day Hillah, Babil in Iraq.

Secrets of the Dead: The Lost Gardens of Babylon starts with the audience being plunged into the time-worn lore of this breathtaking wonder. The film is rooted in the scientific quest to uncover the facts behind the much-loved stories about the Hanging Gardens. Director Harvey Lilley masterfully weaves together a tapestry of history and mystery as the narrative leads us deep into the heart of ancient Mesopotamia.

The movie traces its narrative through the tireless fervor of our primary explorer, Dr. Stephanie Dalley, a highly recognized Oxford University Assyriologist. Dr Dalley has devoted a significant portion of her career to unveiling the truth about the Hanging Gardens. According to her hypothesis, the fabled Hanging Gardens of Babylon might not have been located in Babylon but were actually situated 300 miles to the north in Nineveh, the capital of the Assyrian Empire.

Dr. Dalley shares groundbreaking theories and historical evidence suggesting King Sennacherib of Assyria as the actual creator of the gardens, rather than Nebuchadnezzar II of Babylon. The film follows her as she undertakes exciting expeditions and painstaking research, using an intricate combination of archaeology, philology, and analysis of artworks and historical scripts.

The narrative of Secrets of the Dead: The Lost Gardens of Babylon is further enriched by detours into the contrasting stories of both Nebuchadnezzar II and Sennacherib, providing audiences with an immersive exploration of their lives, ambitions, power struggles, and the cultural and political landscapes of their times.

The documentary equally boasts a series of deeply engrossing interviews with leading historians, linguists, and archaeologists, lending a wide range of perspectives and interpretations of the primary sources referencing the Hanging Gardens. Moreover, it also draws on cutting-edge technology, including 3D computer-generated images, to recreate the potential look of the gardens.

While retracing the path of history's footprints, the film also explores the impact of the gardens on the surrounding environment, the engineering marvels that made it possible, and their place in the sociopolitical context of ancient Assyrian society, along with the vital links with Assyrian royal propaganda and the broader ancient Near Eastern worldview.

Viewers get to delve into the intricate irrigation system that would've been needed to maintain the flourishing high-altitude gardens in an arid environment, enhancing their understanding of ancient engineering skills. The documentary brings the journey full circle by presenting various views on why the gardens could not survive over time.

Secrets of the Dead: The Lost Gardens of Babylon promises an intellectual and entertaining treasure trove. As events unfold, it subtly raises intriguing questions about how history is often a matter of perspective and interpretation, and how presumptions can sometimes hang in our minds as steadfast truths. This documentary is more than a simple archeological pursuit; it's an engaging trip into the heart of an archeological mystery, revealing how the scientific quest for truth can overturn centuries-old beliefs.

With its rich narrative, striking reconstructions, scholarly insights, exceptional production quality, and a suspenseful story arc, Secrets of the Dead: The Lost Gardens of Babylon suits history enthusiasts, lovers of ancient world mysteries, and those intrigued by mankind’s cultural and engineering accomplishments. It's a visual, intellectual, and historical feast, immersing us not merely in the opulence of a lost world, but also in the enduring human passion for discovery.