The Shadow of the Trump Card

Is it really necessary to lose something in order to forgive? And to awaken from a "slumber" in a marriage that no one needs, do you have to receive a greeting from the other side? To sort out new, sluggish relationships with a man, must he leave this life?
Two murders in one day – that of a former friend-betrayer and that of a friend who never became close. A farewell gift from a friend, old letters, a strange note left by the criminal in a conspicuous place – could all of this help solve the crime?
What if – both? Even if they seem unrelated at first glance.