Does a narcissist ever get their comeuppance/karma for the vile things they've done? Such as cheating, smear campaign, etc.

I strongly recommend reading these articles on Quora:

Avoid Making These Big Mistakes With A Narcissist

Boy, could I write a book on the ways and how much I wish they did. Reading through these stories, I find myself amongst my brethren. It seems we all have a person in our lives who just fixated on us. Perhaps we should be flattered that our supply was just “so, damn, good”. But I don't feel like that at all. My ex narc is using our 6-year-old to torment me now, and he is so manipulative that he has our son lie to me so I can't protect him when he hurts him.

Andy Roddick can't believe what's happened to tennis after Roland Garros finishes, 'I certainly didn't expect it' - The Tennis Gazette

Being away from him has at least given me room to observe and call him out though this does no good as he is a pathological liar. He can't keep a girlfriend or any friend for that matter. Meanwhile, I am still trying to heal while in this war. It seems every time I think it's settling he throws more dirt and dust at me to keep me clouded. I think I am getting better. The divorce is final. I've moved on into a new relationship, but I could tell some stories, my lovies. To all who can relate to my pain and the pain of others described on this thread, you're not alone in this. Even when it feels like it. People will eventually see the narc for what they are and you will be redeemed.

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7 Ways Narcissists Discard You

Why do some straight men like to suck dick but don't find other males attractive?

7 Demonic Doors Opened in YOUR Life Through Narcissists

Every time I have to drop him off I worry about my son's safety both physical as well as mental. My ex narc will spin a story around so fast it'll make your head spin. I used to have to write our conversations down so he couldn't twist my words and even then he did it. By the time he left I was a jumbled up mess who didn't know which way was up.

10 Toxic Behaviors of Female Covert Narcissists

Is the water safe to drink in England like here in America or is it necessary to bring tablets to prevent any cholera when in London?

10 Reasons Codependents Fall For Narcissists

7 Reasons Why Narcissists Won't Change

Uncover 7 Key Differences Between Narcissists and Sociopaths

Why does it smell so bad? I noticed that when I move around my vagina has a stench. It’s usually a wet liquid, almost like pee. There’re little to no discharge and it doesn’t hurt or itch.

10 Actions That Terrify Narcissists to Their Core