Illusive Horizon: Seeing isn't always believing

An investigation into the source for a counterfeit part on an aircraft that doesn't officially exist, leads a retired secret service agent and an ex-special forces operator on the decades-old trail of a missing Lunar Module and the truth surrounding the deaths of US astronauts. Was there a secret space program the public wasn't supposed to know about, designed to keep the Russians and Chinese guessing? Or have we been reluctant partners since we first left our planet?