It is apparently unfinished, though critics differ on whether this was a deliberate decision of the author or whether he intended to finish it.

It concerns the "education" of a rich young nobleman, M. de Meilcour, at the hands of characters including his first lover, the middle-aged Mme de Lursay; his mentor, the libertine Versac; the female libertine Mme de Sénanges; and his true love, the young and virtuous Hortense de Théville.

Pierre Choderlos de Laclos may have included an allusion to Les Égarements in his novel Les Liaisons dangereuses, in naming a minor character Vressac.

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