Okay. This has to be a credible threat. Ergo, we have to have seen (and heard about) the real damage Randall has done to Jamie thus far; we have to be in no doubt whatever that he’d do real damage to Claire. We can’t just say, “Oh, he’s such a nasty person, you wouldn’t believe…” We have to believe, and therefore appreciate, just what Jamie is doing when he trades what’s left of his life for Claire’s.
Diana Gabaldon, "I Give You My Body . . .": How I Write Sex Scenes
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