Investigative Committee of Russia
Secrets of Investigation () is a Russian television series filmed from 2000 through 2018. The format of the series features 2 to 4 50 minutes episodes arranged into story clusters. The television series follows the work of a Chief Detective Maria Shvetsova (played by Anna Kovalchuk) of a St.Petersburg Saint Petersburg District IC Investigative Committee of Russia. For the end of 2018 the series contains 144 episodes (in 18 seasons).