I would like to express a very special thanks to the Chair of the Advisory Board, Ann SKELTON. You have been a constant companion and inspiring guide in the Global Study research and advocacy. We highly appreciated and enjoyed having you in spring of 2018 in Venice at the Global Campus and we benefitted tremendously from your presence and your indispensable advice on many chapters. Thank you for enriching the Global Study on Children Deprived of Liberty. My deep gratitude goes to Anna D. TOMASI, the Global Study Advisor at the OHCHR, for her elegant and diplomatic liaison between all UN Member States, the UN Task Force and the Coordination Team. Throughout the entire Global Study process, you were my closest and most entrusted UN colleague and I thank you for your endless, inspiring and indispensable support. Already as Global Study Attaché of the NGO Panel you were advocating for the Global Study right from the very beginning in 2014. The UN Global Study would not be where it is today, if it weren’t for you! Another big thank you goes to the Co-Editor of the Global Study, Reina-Marie LOADER, for your radiant positivity, your admirable ethics and your inspiring motivation. Your involvement in the Global Study is impressive and manifold from dedicating your master thesis at the Vienna Master of Arts in Human Rights on the deprivation of liberty of children in South Africa, to coordinating the child rights activities at the Global Campus of Human Rights in cooperation with the Right Livelihood Foundation, to co-editing the Study. The flexibility but, even more so, the enthusiastic approach with which you were able to work on the Study is remarkable. Your artistic skills and research contribution added significantly to the Study. Your work was indispensable and you are deeply appreciated! I am particularly grateful to the Data Coordinator of the Global Study, Łukasz SZOSZKIEWICZ. You initially came as a guest researcher to the Global Study project for 6 weeks in March 2017. Your talents have impressed the entire Global Study Team, so that we just could not let you go. You have so skilfully supported the coordination of the expert meetings but I am even more impressed with the efficiency and creativity with which you coordinated the entire analysis efforts of the Global Study questionnaire responses. In parallel, you created the data analysis models used in the Study and were the main liaison to the database developers. Your research was essential for the success of the Global Study and you are an integral and indispensable part of the team! Thank you! I would like to express special thanks to my two closest colleagues who accompanied me during the entire journey of the Global Study preparation, coordination and implementation: I wholeheartedly thank the Study Coordinator and my assistant Manu KRISHAN for everything you have done. You have come into the project and you have amplified its potential. Your dedication to working in the service for and with children is inspiring. The Global Study XXV