A murder mystery can end either resolved or unresolved. Most writers opt for the former, if only out of habit or crowd-pleasing instinct, though some habitually leave ends just loose enough to lead to a sequel. In the absence of any resolution, a novel’s very status as a murder mystery comes into doubt. It tends not to be described as belonging to the genre, but as using its elements — or, imprecisely, as “deconstructing” it. Reviewers of Kwon Yeo-sun’s Lemon (레몬), newly published in Janet Hong’s English translation, disagree about whether its central mystery is fully resolved. One could make a fair case either way, to my mind, but in this lack of a resolution over whether it even contains a resolution — its meta-unresolvedness, if you like — lies a clue to the source of its power, which critics have variously but unanimously praised.