I am officially mint-green with envy: Daniel Engber, who writes “The Explainer” column over at Slate, has written an informative, off-beat, thought-provoking column on just the sort of ethical/legal hypothetical I adore. The topic: If a Siamese twin commits murder, does his brother get punished too?

He does a terrific job. his essay also reminded me of a classic “Tales from the Crypt” episode involving a fictional pair of conjoined twins that one could imagine getting into such a dilemma.