Bolivar Can't Carry Double

The spaceship “Bolivar” has been circling Mars in orbit for the third day already—the final point of its long journey.

It was the first international spaceflight expedition to the red planet in history. But the flight control center wouldn’t allow a landing: over the last two days, the atmosphere there had heated up to the limit…

/… you know what, my friend!—the policeman jumped in his chair, making it swing ominously. — The catastrophe has already happened, if you haven’t understood it yet. There has been a murder aboard your ship! And one of the crew members is now floating in the hold with a smashed-in skull, and one of the other two— is the killer!/