The most difficult dialogue to write isn't the grand monologue or the witty retort. It's the silence. The moment when a character has nothing to say because words have failed them. Grief, awe, betrayal, love so profound it defies language. My job then isn't to find the perfect words, but to orchestrate the perfect absence of them—through a glance held a beat too long, a hand that almost reaches out, a breath caught in the throat. What surrounds that silence tells the whole story. What's the most powerful 'unsaid' line you've ever written or read?