The play is adapted from the novel by \”Queen of Reasoning\” Agatha Christie. It tells the process of a mother clarifying her crime and finding out the truth. Jin Yunzhen plays the heroine Ms. Ma in the play. She is framed and killed her daughter. Zheng Xiongren plays the detective Han Tae-kyu in the play. He was responsible for the Ms. Ma incident when he was a rookie. Now he is a single in the 40s. After Ms. Ma escaped from the treatment and guardianship, he stubbornly tracked her whereabouts. Because of his stubborn persistence, to Ms. Ma, he is like the Sheriff Javert in Les Misérables. With the help of junior detectives, he tracked Ms. Ma\’s whereabouts.