Experience a heart-wrenching exploration in "Gray Matter (2004)" as filmmaker Joe Berlinger uncovers the chilling truth behind over 700 children's deaths at a Nazi "euthanasia" clinic. Delve into Berlinger's quest to find Dr. Heinrich Gross, the infamous "Austrian Dr. Mengele," linked to these atrocities. Witness Berlinger's emotional journey in Vienna as he confronts the shadows of a nation struggling to come to terms with its dark past. Along the way, Berlinger connects with survivors of the clinic and other brave souls challenging a society in denial of its haunting history. "Gray Matter" is a poignant narrative of resilience and remembrance, shedding light on a chapter of history that demands recognition. Join Berlinger on this poignant odyssey that unravels the layers of a harrowing legacy, leaving a profound impact on all who bear witness.