The Stephanie Lazarus episode I think is one of the most talked about---a respected police officer, who became a respected art fraud detective---brutally kills a rival for a man when she first started out as a cop. And then spends over 20 years living a happy life, with marriage, a child, job promotions. A good episode, which has been done in a two-hour format by a different network.
See if you can find that one---it answers more questions.
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