The Young Poisoner's Handbook

The "Newton's Diamond" that Graham is obsessed with is a fictional device. Antimony sulfide forms a crystal called stibnite which is gray and opaque, not clear and colorless like most gem-quality diamonds. "Diamond" was the name of Isaac Newton's dog.

When Dr. Zeigler visits the institution for mentally unstable criminals in which Graham is hospitalized, the director of the institution says, referred to another patient: "Vulpes pilum mutat, non mores", saying it means "The leopard never changes his spots". Graham corrects him, saying it means instead: "The wolf changes its fur, but not its nature". Actually, "vulpes" means "fox".

Featured in At the Movies: Up Close and Personal/Muppet Treasure Island/Fargo/Heidi Fleiss: Hollywood Madam/The Young Poisoner's Handbook (1996)