In “Agatha Christie’s Murder Is Easy”—adapted by director Meenu Guar and writer Sian Ejiwunmi-Le Berre with a casual fidelity to Dame Agatha’s 1939 novel (also titled “Easy to Kill ...

But somehow I’d never read one of her novels. “When I first read Murder Is Easy, I couldn’t believe how daring, experimental and furious the book was. Nothing like I’d expected.