Detectives from 4 'A'. Harmful Holidays and the Rescue of the School's Honor

The detectives from 4 'A' have new worries even during the holidays. Who else will find out what happened to the NotQuitePalaceOfCulture and expose the suspicious Santa Claus? The heroes have to discover who made Krutikov's computer smile and what terrible secret his parents are hiding. How to save the school's honor? Where do they want to take detective Andrey? So many questions, but the team from 4 'A' will find answers to each of them!