"Staya" is an exciting detective novel written by a famous Ukrainian writer. This book tells the story of a group of friends who decided to relax in a mountain resort. However, when they enter the dark forest on their bikes, strange things begin to happen. Events rapidly gather momentum when people from the local village begin to disappear, and the main characters decide to find out the truth. Through each turn of events, readers are faced with unexpected plot twists that keep them on the edge of their seats until the very end. "Flock" is a book that captivates and keeps you in suspense on every page, leaving behind many questions and unexpected discoveries.