Between 2008 and 2013, Kenya’s Tenth Parliament was responsible for the most sustained period of legal reforms in the country’s history. The promulgation and implementation of a new constitution, the establishment of a truth commission and substantial changes to the country’s judiciary, security sector, electoral system, criminal justice system and witness protection programme meant that during this period Kenya made significant progress in ending impunity. After more than two decades of taskforces, commissions, inquiries, reports, recommendations and proposals, much-needed rule of law reforms were finally implemented. To what extent can the momentum for this widespread and fundamental rule of law reform be attributed to the OTP’s strategy of positive complementarity and the commencement of trials in The Hague.