Unlock! Salvation from the catacombs. Claway F.

When ancient runes begin to appear mysteriously throughout the school, Alex decides to find out what they mean. Together with his friends, he goes into a dangerous adventure that will bring him to real catacombs. Dangerous traps await the guys in the way - to be saved, they need to solve complex puzzles and learn how to make quick decisions.

Each step can be the last! If you are ready to go to meet the unknown, join and help the detective team to unravel the secret and remain intact and unharmed.

Attention! This book does not need to be read as usual, a page by page. Follow the instructions, crossing the chapters, and the story will change depending on the decisions you make.