Poison is a fairly rare murder weapon. And here Nikita Kolesov, the head of the "lethal" department of the Internal Affairs Directorate, and Katya Petrovskaya, an employee of the press center, had to deal with two cases of poisoning at once. The tracks lead to the exotic oriental restaurant "Al-Maghrib". There are many suspects: producer and husband of pop star Aurora Gusarov, restaurant regular playboy Simonov, chef Polyakov ... But there is no direct evidence, and meanwhile the killer "treats" the third victim with poison. Here they are - spicy oriental dishes, lulling Moroccan melodies, feigned smiles and insidious intrigues ... When Katya guesses who he is - a ruthless poisoner, it's too late to call for help - you have to act, because in his hands is the fourth victim ...