"In the still waters there are devils" - this proverb accurately characterizes the eccentric family that lives in the old Buckshaw estate. A father turned on stamps, a crazy aunt and two sisters: a hypocrite and a blue stocking - how do you order a young detective to have fun in such a company? The investigation into the ridiculous death of a visiting puppeteer reveals other dark secrets that no one has remembered for a long time - a great pastime.Several years ago, a hanged boy was found in the forest, the police could not figure out whether it was an accident or a murder ... What a surprise it was when, in a theatrical production, the doll's face turned out to be a copy of the deceased Robin! A good way to practice deduction using your favorite hobby - chemistry and poisons.