Lay a weapon (pistol, sword, etc) on the table near where you will work on him, and tell him that "it can all be over with soon, just tell me what I want to know," then start skinning. When he starts screaming for a question- you know you have his attetion.
Ask only a single question- wait for an answer, be patient (wash your hands while you talk, be kind and friendly), explain that you have other questions then retrieve your razor. If he asks for another question tell him no- he needs to appriciate what you are going to do to him. Have one of your goons interurpt, be annoyed and allow the questioning to take place while you wait impatiently and annoyed (the reverse of your previous demeanor).
When all questions are answered ask him if he told the truth. Be kind and considerate. Retrieve your blade and wait- patiently. When he tells you that he was- express to him your desire to continue the questioning, suggest that one of his family members might know more then him (even if they are not involved).
Should he proclaim that he was telling a lie or two then ask for a correction, but happy and smile a lot, have your goon be mad- "now he's gonna take all dammed night!"
Should he say that he was being truthful inform him that you will get a relitive of his to check his answers.
Patients, calm, torture, take days, start with things that can be removed without to many health issues (feet are always cool to start with). Remember to be kind.
In the end- when you are done, end him.