On Mars, a research team encounters an ancient puzzle that only a guitarist can solve In 2029, an American research team ventures to Mars to investigate an astounding find: a labyrinth older than humanity itself, whose maze of rooms conceals the deepest secrets of the red planet. In the final chamber, strange music plays, as chilling as it is beautiful. It will be the last thing the scientist who discovers it ever hears. As the music rises to a climax, the chamber door closes, leaving him to die in the pitch dark. Where one explorer has failed, Ben Cassidy must not. An internationally famous guitarist, his music is the closest thing on Earth to Mars's deadly hymn. The government sends him into space to solve a planetary mystery, but what Cassidy encounters is a team of researchers whose jealous competition is every bit as dangerous as the secrets of Mars.