Hidden murder. Serova M.S.

Angelica Dementieva addresses the private detective Tatyana Ivanova. She is sure that her friend Tonya was killed, although the police did not find crime. Tatyana feels that Angelica’s friend could have killed, and goes to Antonina’s apartment to check her suspicions. She notices that not everything is so simple with the medicine that Antononin took daily, and they could really kill her... It remains to understand who the death of Tony was beneficial.