Torturer's implements include tongs, a pair of pliers, a branding iron, a flaying knife, two pairs of manacles, a short length of chain, a hammer and box of nails, and a pear of anguish. A full set of torturer's implements costs 30 gp and weighs 20 lbs.
You can use the components of your torturer's implement to make veiled, wordless threats in conversation. For instance, you can drum your fingertips on the handle of a razor while in conversation, or click tongs in the face of a potential victim to terrify them before the session begins.
When you study an injured or dead creature, your knowledge can help you understand the circumstances of and intent behind its wounds. You also have intimate knowledge of pain and nonlethal injuries, and how to best to both cause and treat them.
Your skill with torturer's implements allows you to determine the truth and intent behind the statements of a creature in pain or under duress, whether or not you caused its distress.