The second question is: “Is there anything you want to tell me before I find out another way?”
This question works on a different level. It introduces the idea that the truth might come out regardless of what the person says.
It creates psychological pressure, not through accusation, but through implication.
If someone is hiding something, this question can make them reconsider whether maintaining the lie is worth the risk.
A truthful person will usually respond calmly and directly. They may look confused about why the question is being asked, but they will not show signs of internal conflict. Their answer will be simple because they have nothing to hide.

A person who is lying may react differently.
They might become defensive, overly emotional, or suddenly eager to change the subject. Some may double down on the lie, while others may start to reveal partial truths as a way to reduce the pressure. This is because the question introduces uncertainty.
The person begins to wonder what you might already know, and that uncertainty can disrupt their confidence.