Secret Space in order
The "Secret Space" documentary series 3 films, in release order.

Secret Space I: The Illuminati's Conquest of Space
2005
NewSecret Space III: The Crop Circle Conspiracy
Secret Space III: The Crop Circle Conspiracy
2011
NewSecret Space II: Alien Invasion
Secret Space II: Alien Invasion
TBA · Not out yet
New
Frequently asked questions
What order should I watch Secret Space in?
1. Secret Space I: The Illuminati's Conquest of Space (2005), 2. Secret Space III: The Crop Circle Conspiracy (2011), 3. Secret Space II: Alien Invasion.
Do any Secret Space films have post-credit scenes?
None are listed on TMDB.