First Born (1988)

Plot

Edward Forester, a genetic researcher, becomes obsessed with creating primate hybrids. His groundbreaking work leads to an unexpected outcome: the birth of a human-gorilla hybrid named Gor. Determined to protect his creation, Edward conceals the truth and raises Gor as his own, teaching him to communicate and fit into human society. Despite these efforts, Gor's true nature surfaces, leading to a series of tragic events and startling discoveries that challenge Edward’s moral boundaries and ultimately reshape their lives forever.