The enemy agents from an unknown nation have secret automated facilities set up in the Atlantic and Pacific oceans for the purposes of sinking ships. The super submarine "Pioneer" and it's intrepid crew is dispatched to find the source of these mysterious sinking's...Unknown to the captain, his chief engineer is working for the bad guys, intent on stopping their efforts, at any cost...It seems the real chief had a twin brother who was a circus acrobat who murdered and replaced him.
Director:
Writer:
Sergei Stolyarov
Vorontsov
Igor Vladimirov
Skvoreshnya
Pavel Luspekayev
Kartsev
Mikhail Gluzskiy
Ivashev
Sergei Golovanov
Gorelov, inzhener-mekhanik
Pyotr Sobolevsky
Druzhinin, assistant commander
Vakhtang Ninua
Arsen Davidovich Lordkipanidze, professor, ichthyologist
Sergey Komarov
Andrey Nikolaevich, professor, oceanologist
Antonina Maksimova
Olga Ivanovna Bystrykh, doctor of the Pioneer submarine
Leonid Pirogov
Ivan Nikolayevich Bystrykh, father of Olga Bystrykh
Troady Dobrotvorsky
Vasily Ivanovich Bazov, Colonel of State Security
Pavel Luspekayev
Kartsev, senior lieutenant of state security
Irina Preis
Sidorina, administrator of the Intourist hotel in Riga
Igor Bristol
Pavlik, son of the captain of the ship "Arktika"
