Under the dome -- Unusual stars -- The crowded sky -- Debunked -- Scintillations -- Project Henry -- Hynek in wonderland -- Flying saucer conspiracy -- Interaction -- Obscuring influence -- Burned brush -- Will-o'-the-wisp, part one -- Will-o'-the-wisp, part two -- Mr. UFO -- Signal in the noise -- Invisible at last -- The UFO experience -- The spur -- Purple peach trees -- Hynek vs. Sagan -- Close encounters -- Arizona -- The supersensible realm

Details the life of the astronomer hired by the United States Air Force who spent years debunking sightings of UFOs across the country before shockingly changing his mind and using modern science to accept that they actually might be real