The series revolves around secret U.S. Air Force investigations into supposed UFO encounters and unexplained phenomenon, undertaken by astrophysicist, and eventual ufologist, Josef Allen Hynek in the 1950s and 1960s.

• Aidan Gillen
• Michael Malarkey
• Laura Mennell
• Robert Zemeckis
• David OLeary
• Sean Jablonski
• Project Blue Book - Season 1