– No, there's no fourth. Did you realize we went down to the third?

– Got it, just didn't think it was a subway. Although it's not clear what was where we were having a smoke break.

– It's not really a subway, there are such dead ends that even I don't know everything in so many years.

– What's a capsule station?

– You're about to find out.

They got off at this station, which was similar to the one where Vasilievich had told them about the Perimeter problem. No one was there, there was a sliding iron door on the opposite wall. Zhidkov approached it, looked into the reader's scanner, there was a click, and the door slid open. There was a huge pipe. To get into it, he had to push back another hatch, which Vasilievich did. Rutra saw a kind of capsule inside, a specially equipped place for one person.

– Sit down, or rather – lie down, you'll try it out, – said the chief.

– I hope no trickery is intended?

– How can our work be without a catch?

– Is it safe? – Ruthra asked in a firm voice.

– Trust me, absolutely. The road to heaven is always safe. This is a new installation for emergency and high-speed travel between stations.

Ruthra looked around the rig; there didn't seem to be anything dangerous in it. He climbed in, and Vasilievich slammed first the hatch of the capsule itself and then the main hatch. Rutra got a little worried, looked questioningly through the glass windows of both hatches at Vasilievich. He smiled in his pleasant way. Inside the capsule was a soft bed-chair that automatically "enveloped" him so that he was almost in a spacesuit. There were no controls of any kind. Rutra looked at the Colonel again, no sound was heard, Vasilievich was indicating something with his hands – either "no" or "don't do it". In a split second several metamorphoses occurred to Rutra – waves of anxiety, outrage, indignation, concern and uncertainty came over him all at once. He realized the meaning of Vasilievich's gesture – "goodbye." Rutra's body shook with the jerk of the "capsule," which raced, accelerating more and more, down the tube. Where was this strange machine going? Rutra did not lose his composure. Logic told him he was not going to death.

We often look for parallel worlds without noticing the real world around us. We want to solve a conspiracy theory without knowing the theory itself. Are there organizations running the world? From this book you'll learn about the one and only mystery. Rutra, by fate or by someone's design, has fallen into it. What awaits him? Who is his friend and who is his enemy: human or artificial intelligence? Who will come back out – him or his double? A fascinating journey into a super-secret, super-technological world hidden in the bowels of the earth awaits you.

The most powerful influence on us is a secret that is carefully hidden from us.

The capsule was accelerating at breakneck speed, and it was dark. Ruthra was nervous, shaking violently. Suddenly there was light, the capsule was passing through the station. Ruthra noticed that this station was very similar to the one where he had boarded the tube; he saw the sign "#22" on the wall and remembered that at the beginning of the journey it had said "#21". The capsule swept through the station; pitch blackness came again. Ruthra calmed down a bit and looked around. The capsule wasn't so cramped. A holographic display lit up in front of his face, and the words "Speak" flashed on it, not very brightly. After a little thought, he asked: