Cordelia Gray is an aspiring private detective. Her first case is to investigate the circumstances of the death of Mark Kellender, whose body was discovered in a country house. The police believe that the young man committed suicide in a state of depression - having unexpectedly dropped out of university, he went out of town and got a job work as a gardener. However, Cordelia is convinced that Mark was killed. The investigation leads her further into the labyrinth of intricate relationships of the Kellender family and carefully hidden secrets of the past, in which the motive for the murder should be sought...