: Still feeling guilty for disfiguring Angela years ago, Caroline deliberately staged the scene to look like a suicide and went to the gallows without a fight to "pay her debt" and protect her sister from a crime she didn't commit.
: Caroline’s younger half-sister, whom Caroline had accidentally disfigured as a child. The Twist Ending [S9E1] Five Little Pigs
Fourteen years before the main story, Amyas Crale was found dead at his estate, Alderbury, poisoned by . At the time, he was having a flaunted affair with his young model, Elsa Greer . Because Caroline had discovered the affair and allegedly stolen the poison from her neighbor's lab, she was convicted and hanged for the crime. Before her execution, she wrote a letter to Lucy claiming her innocence. The "Five Little Pigs" (The Suspects) : Still feeling guilty for disfiguring Angela years
Poirot concludes that while Elsa got what she wanted—Amyas's death—she ended up with a "living death," spending her life in bitter emptiness while Caroline died at peace. At the time, he was having a flaunted
Through his psychological analysis of their testimonies, Poirot discovers a heartbreaking truth: