This chapter provides the analysis of the intelligence gains that are said to have resulted from the use of interrogational torture and coercion in the CIAs High Value Detainee programmed Northern Ireland, Algeria and Israel. It examines the evidence from a range of sources in an attempt to gain a better understanding of effectiveness. The chapter assumes the intelligence gained from the use of interrogational torture that needs to be reliable and timely in the sense of preventing an imminent act of terrorism. The conflict concludes that there is no evidence that are prevented by imminent terrorist attacks. One of the crucial issues to arise out of the analysis is the evidential mismatch that exists in the case for legalised interrogational torture. The terrorist acts committed by lone wolfs are unlikely to be prevented by interrogational torture and the HVD programme produced no intelligence conerning imminent attacks.