The Outer Limits (1963)

S1E11 It Crawled Out of the Woodwork

Title: Emergence from the Shadows Plot: A remarkable entity composed entirely of energy threatens the researchers at a scientific facility, concealing a lethal truth. As the team grapples with this unforeseen phenomenon, they must uncover the mystery behind its origin and intentions before it becomes too late. Tensions rise as the researchers race against time to understand the creature's capabilities and avert disaster.