The textbook "Criminal Law in the Metaverse" by Tim Erkens offers a comprehensive analysis of the applicability of substantive criminal law in the context of the Metaverse, a novel and immersive development of the internet. This work addresses the challenges and questions arising from the merging of real and virtual worlds. It examines how existing legal frameworks can be applied to the new realities in the Metaverse and where there may be gaps in criminal liability. Additionally, aspects such as brain activity in virtual spaces, the influence of artificial intelligence, and the legal treatment of virtual assets are discussed. This book is aimed at legal professionals, students, and anyone interested in exploring the legal implications of the digital future.