Narrated by award-winning journalist and veteran ABC News anchor George Stephanopoulos, “A Light in the Darkness” reveals fascinating adaptations of species that have evolved in perpetual darkness. Venturing into intricate cave systems, the deep oceans, and subterranean aquifers where light barely reaches, we meet the scientists who have dedicated their lives to these creatures, working tirelessly—often in obscurity—to understand and protect ecosystems and animals most people will never know exist. But “A Light in the Darkness” also takes audiences on a deeply personal journey. As the film’s director confronts a terminal illness, the story becomes a reflection on what it means to face one’s own darkness. Mirroring nature, we see his resilience, fragility, and a deep-seated will to endure. Through never-before-seen scientific insight, immersive cinematography, and a deeply personal narrative, the documentary shines a light on the species, people, and wild places that exist on the edge—exploring how commitment to understanding and protecting the natural world can fill our lives with deep purpose, even in the face of mortality.