Investigation Led by ZnaToKi, or Investigation Led by Experts was a popular 1971-1989 Soviet detective TV-series with two Russian series. Total episodes released — 24.

Leonid Sergeyevich Bronevoy was a Soviet and Russian actor. Though primarily a stage actor in the Lenkom Theatre, Bronevoy also made occasional appearances in films. He was named People's Artist of the USSR in 1987 and won the Nika Award in March 2008.