In Search of... is a television series that was broadcast weekly from 1977 to 1982, devoted to mysterious phenomena. It was created after the success of three one-hour TV documentaries produced by creator Alan Landsburg: br br In Search of Ancient Astronauts br In Search of Ancient Mysteries br The Outer Space Connection br br All three featured narration by Rod Serling, who was the initial choice to host the spin-off show. After Serling's death, Leonard Nimoy was selected to be the host. br br This Episode examines groundbreaking experiments that show the possibility that plants respond to people's thoughts.