That’s what retirement from cheating feels like: not triumph, but stillness. The quiet relief of no longer living a double life; of no longer mistaking attention for affection, or drama for passion.

This week on “Uncanny Valley,” we break down how one of the most common card shufflers could be altered to cheat, and why ...

"My husband was cheating on me with one of my friends. She was getting married, and we RSVPed 'yes' to the wedding. But then, suddenly, he got a headache, and we didn’t go. I became suspicious. One ...