Astronaut Frank Borman is all alone on the moon. No ship. Nobody answering his radio calls.

His spacesuit is running out of air fast, yet he doesn't know what he's doing there.

Something is looming over him on the lunar surface. Something massive that doesn't belong.

Borman doesn't belong there either — in  just a few months Neil Armstrong and Buzz Aldrin are due to touch down in the  Sea of Tranquility.

Meaning this is no NASA mission. But who else has the technological capability? 

Possibly a secretive defence intelligence group known as Bermuda, though Borman suspects it's a giant step too far even for them.

Which only leaves the Russians. 

If that's true, he must have an important job to do. A job that transcends Cold War politics and space age rivalry.

But everything about this is is wrong. 

Why has he been abandoned? And why can't he remember anything?

Apollo 8.1 is compulsive reading… strap yourself in.