I suppose love is an act of courage. Agatha Christie’s Marple: The Secret of Chimneys- Miss Marple s05e02 (2010)
They do It with mirrors, Agatha Christie
I think this title is an intriguing metaphor for detective novels. – Wikipedia on the novel: https://en.wikipedia.org/wiki/The_Body_in_the_Library – Wikipedia on Agatha Christie: https://en.wikipedia.org/wiki/Agatha_Christie