Prior to 1992, Turkish law had no rules regarding exclusion of illegally gathered evidence, though it was generally understood that statements that were the products of torture could not be used in a criminal trial. In that year, however, the legislature enacted a specific exclusionary rule to apply to involuntary confessions, and a more general rule which provided for exclusion of evidence “unlawfully” obtained by law enforcement officials. Thereafter, the Turkish Constitution was amended to require exclusion of “illegally” obtained evidence and the new 2004 Code of Criminal Procedure contained provisions reflecting the constitutional command. This Chapter explores the Supreme Court’s application of the new rules and notes a certain reluctance to apply them, especially in the context of the “fruits of the poisonous tree”.