ALNAP's Review of Humanitarian Action series  forms part of its broader efforts to support and improve learning and accountability within the international humanitarian system. The series aims to provide a means to reflect on performance across the sector by raising awareness of evaluation findings, and  assessing the quality of recent evaluations, while also seeking to analyse and report on performance-related issues. This year the Review includes an analysis of capacity building amid humanitarian action, a synthesis of lessons learned from evaluations for the Darfur crisis, and a meta-evaluation of humanitarian evaluation quality with sections on good practice.