In the Main competition section, an international jury announces the Best Central and Eastern European Series.

Winners of The Best CEE Series: The 3rd edition of Serial Killer took place in hybrid version from 22 to 27 September 2020.

Due to the COVID-19 pandemic, the festival offered the series online for free and the physical event took place with limited capacity for three days in the Husa na Provázku Theater.

Winners of The Best CEE Series:[9] The 5th edition of Serial Killer took place form 20 to 25 September 2022 in Brno.

Winners of The Best CEE Series:[10] The 6th edition of Serial Killer took place form 19 to 24 September 2023 in Brno.