Seana Shiffrin, “Speech Matters: On Lying, Morality, and the Law” (Princeton UP, 2014)

It is generally accepted that lying is morally prohibited. But theorists divide over the nature of lying’s wrongness, and thus there is disagreement over when the prohibition might be outweighed by competing moral norms.There is also widespread agreement over the idea that promises made under conditions of coercion or duress...