Master Manipulator( Player's Handbook II, p. 80)
Your words are your weapons. You confuse others with your speech, luring them into giving up vital secrets and leaving them dumbfounded with your carefully constructed, conversational static.
Diplomacy 9 ranks, CHA 13,
This feat grants two new uses for the Diplomacy skill. You must share a language with a creature to use these options against it. Neither ability functions during combat. Captivating Speech: You can distract a creature with your compelling delivery and witticisms. With a successful Diplomacy check opposed by the target's own Diplomacy check or Will save, you can impose a -4 penalty on the target's Listen, Sense Motive, and Spot checks so long as you continue speaking. You can affect a number of targets equal to 1 + your Cha bonus (if any), as long as they are all within 20 feet. Trap of Words: If a creature attempts and fails to successfully to use Bluff to lie to you, you skillfully maneuver the conversation to confuse the target or trick him into letting slip a vital clue. After succeeding on your Sense Motive check, you can then engage the target in conversation for at least 1 minute. At the end of this time, make a Diplomacy check opposed by the target's Bluff check. If you succeed, the target inadvertently reveals his lie and the reason behind it.