Is BER-66 a human or a machine? As he navigates the corridors and locked rooms of a strange bunker, he must solve the mysteries of murderous doppelgangers, a slow-motion city on the verge of destruction, and ultimately, the all-powerful Mechanism itself...

Considered to be one of the most important and original Polish science fiction novels of all time but never before translated into English, Adam Wisniewski-Snerg's debut novel is a haunting and mind-bending masterpiece of philosophical enquiry that penetrates deep into the heart of what it means to be human.