No Friends Like Old Friends (S03E01)

When Frankie’s old friend from the war mysteriously vanishes in London, she teams up with the renowned author Agatha Christie to investigate the circumstances surrounding the disappearance. Together, they delve into the shadows of the city, piecing together clues and unraveling secrets that could lead them to the truth. As they navigate the complexities of friendship and loyalty, Frankie discovers that the past can hold more than just memories.