About the book: year / Bella Panfilova became an involuntary witness to the murder of a brilliant chemist who made the "elixir of happiness" from the poison of amphibians - a narcotic substance, a drop of which can “make” a person happy, and a few drops can “control” a person. Having hidden important evidence from the investigation at the request of Klintsevich, Bella and Oleg Protasov took care of the chemist’s favorite toad Laura, began their private investigation and found themselves in incredible, inexplicable situations. The first love of Bella and Oleg “grows up” and flares up again in their hearts…