One speechmaker inspired millions with his words, the other utterly destroyed his own multi-million-dollar business with just a few phrases.

Civil rights icon Martin Luther King Jr (played by Jeffrey Wright of American Fiction, Westworld and The Hunger Games) and jewelry store owner Gerald Ratner offer a stark contrast on when you should stick to the script - and when you should take a risk.

We're taking a short rest on Cautionary Tales this January. We'll be back again in February, with a treasure chest of gripping, hair-raising tales for your ears. While you wait, we wanted to share some classic episodes from the Cautionary Vault - this is one of our favorites.