Never say never. Ivan Pavlovich could not even imagine that he would get a dog. And now his beloved Demyanka fell ill. The veterinarian prescribes therapeutic swimming for the patient. Getting your dog to crawl across a bathtub is not an easy task. And the case that Podushkin is now investigating is also not easy. Music teacher Zinaida Markina asks to find out the circumstances of the disappearance of her daughter-in-law Svetlana. She flew abroad to vacation at sea and disappeared on the first day. Local police decided that Sveta drowned after going for a swim after drinking several cocktails. But Markina is sure: her daughter-in-law was killed... Moreover, Eleanor (yes, she rose from the dead) is extremely dissatisfied with the monument that Podushkin erected on her grave. What can I say? Hold on, Ivan Pavlovich, the darkness thickens before the dawn, you will certainly figure everything out.