Q: For the in-turn use of Twist Of Fate, can I steal a Keeper from someone’s hand, or only from in front of them?

A: You can only steal a Keeper they have on the table. This card behaves just like the standard Steal A Keeper Action when played during your turn, and as such, you can only steal what’s available. How would you know if they had a Keeper in their hand anyhow?