In a future where humans have colonised Mars, young Lieutenant David Corriston sets off for a huge space station orbiting the Earth, through which every ship passes. During the journey, the bodyguard of Helen Ramsey, daughter of a powerful Martian magnate, is killed before his eyes. Then the young woman disappears.
On the station, nobody believes Corriston: they think the journey has disturbed his mind. But he discovers that impostors are hiding behind masks, and he investigates, in a story that is part detective novel, part space adventure.
Fast-paced from start to finish, this novel is easy to read in the language you are learning.
