After the man's death, his mistress claimed her inheritance, as she is raising his twin sons. However, the father of the deceased does not intend to voluntarily share the inheritance and requires a DNA test for twin grandchildren, whom he does not recognize. At the same time, the grandfather decided to abandon one of his granddaughters, because their mother and the official widow of his son is now in prison. So how many heirs can claim a house in the Moscow region?