Space mockumentary Apollo 18 has been shrouded in mystery for months. But no longer! The first ever trailer for Gonzalo López-Gallego's lunar horror epic is out, and it looks intense. Let the space madness begin!

The only information we've had about this film was this little tidbit, "A film about the real mission to space in the 1970's that was canceled by NASA." And a tagline "there's a reason we've never gone back to the Moon." The trailer, however shows a whole lot more. In this actual footage from the secret Apollo 18 mission, you see creatures inside the spacemen's suits (so they believe), alien viruses creeping across their torsos and what looks like... a time-slip? (At one point in the trailer, doesn't it look like they're uncovering their own bodies decaying amidst the Moon rubble? Or perhaps it's another lost astronaut team?) Either way, we like the gritty old-camera feel (whether that's the actual camera, or just a filtering technique). Let's hope this film can resurrect the "found footage" style out of the overused gutter.

Here's the new (much longer) synopsis:

Officially, Apollo 17, launched December 17th, 1972 was the last manned mission to the moon. But a year later, in December of 1973, two American astronauts were sent on a secret mission to the moon funded by the US Department of Defense. What you are about to see is the actual footage which the astronauts captured on that mission. While NASA denies its authenticity, others say it's the real reason we've never gone back to the moon.

Apollo 18 will be in theaters on April 22nd.

Watch it in HD over at Apple Trailers.