The protagonist of the Russian detective series "Mouse Trap" is a woman named Irina Merkulova, who works for the Investigative Committee. Work is her whole life, and she can't imagine a day without some gruesome investigation. Despite this, a worthy man falls in love with her, willing to tolerate her constant urgent calls to the office or crime scenes. But his patience runs out when Ira goes to investigate another murder instead of going on their honeymoon...