Temple of the Dark Ancestor

Fate itself presented Ekaterina Petrovskaya and Gektor Borshchov with an unforgettable wedding gift — the investigation of the case of the Missing Expedition… In 1931, Professor Veliantov and his friends made a grand discovery in the Tian Shan mountains. Understanding the importance of the discovery for world science and the danger threatening the expedition in those wild places at the time, the professor sends fragmented notes, photographs, and… most importantly, the "evidence" to various recipients. What the scientist foresaw happened — the expedition vanished without a trace in the mountains.
Almost a hundred years later, the mysterious death of the research associate of the Zoological Museum, Elena Krasnova, and two other people stirred up information about the Missing Expedition. These murders are being investigated by Colonel Gushchin, Katya Petrovskaya, and Gektor Borshchov. And to find the criminal and uncover that invaluable treasure, hidden from people for almost a century, they need to go to Tian Shan…