Adept Ears

For the duration, when you hear a statement, you can trigger a spellcasting ability check for yourself that you can make as a reaction. If your check succeeds against the creature's Charisma (Deception) check (which the GM rolls in secret when this is triggered), you know if it's a lie or not. When you succeed in determining a statement's honesty three times, the spell ends early. On a failed save, it doesn't count against the number to end the spell.

At Higher Levels

When you cast this spell using a 3rd-level spell slot or higher, you can determine one additional statement's honesty for each slot level above the 2nd.