Discovering that one's wife is cheating on them is not a situation that would lead to serenity but instead to distress, heartache, and pain.
Consider the statement "I found a text message on my wife phone that proves she is cheating on me.". Based on this "The discovery of the text message on my wife's phone that proves she is cheating on me has left me in complete serenity" a true statement? Yes, no, or I don't know?