G. E. M. Anscombe's Intention is a classic of twentieth-century philosophy. The work has achieved notoriety despite being a dense text and is a standard reference point for anyone engaging with philosophy of action and philosophy of psychology. This guidebook situates Anscombe and Intention in their historical context and considers the influence and implications of the piece whilst distinguishing it from subsequent work in the philosophy of action. It is an essential introduction for anyone wanting to understand and gain a perspective on Anscombe's seminal work; useful in the study of the philosophy of action, philosophy of psychology and related areas.