Secret Venture.

Professor Henrik (Hugo Schuster) returns to England from a working trip overseas and is met by his glamorous secretary Joan (Hylton) O'Hara (Taylor) has come in on the same flight and in the bustle of the airport he and Henrik mistakenly pick up each other's identical briefcases. Henrik is abducted by a group headed by a sinister man named Zelinsky (Karel Štěpánek) who are eager to lay their hands on the formula. They are furious to find that Henrik's briefcase contains nothing more than the everyday bits and pieces