Sea of Crises

"That shouldn't be here."

Those are the last words uttered by Commander Bob Cartwright in September 1976, just before all communication with the crew of Apollo 18 is inexplicably lost during the astronauts' first moonwalk. Frantic attempts to re-establish communications with the astronauts are unsuccessful. Three days later, however, as NASA is scrambling to put together a rescue mission, astronomers detect a burn of the service propulsion system, and, on schedule, but still in eerie silence...