One of the latest creations among the spectre of transnational justice mechanisms are the so called hybrid courts, which encompass both local and international judges and prosecutors, apply a mix of international and local laws. In this study Taru Kuosmanen condutcs a finely nuanced and very informative dissection of three recent cases of hybrid jurisdictions - the serious crimes regime in East Timor, the international judges and prosecutors programme in Kosovo, and the Special Courts for Sierra Leone. She focuses on the practical problems faced in the establishment of these courts and the conduct of the trials.