Chapter 1 provides an introduction to the work of the Court of Protection (CoP) and mental capacity law, before setting out the core concepts and arguments of the book. The key argument is that the CoP has not effectively achieved access to justice for the subject of proceedings, particularly through its failure to sufficiently place their voice and participation at the centre of its work. This chapter outlines the key issues raised, including the extent to which CoP proceedings involve people affected by its decisions, the type of evidence it considers in reaching decisions on mental capacity and best interests, the ways in which its processes and spaces operate, and use of alternative ways of resolving CoP disputes.