The Bell Jar (1963) is a semi-autobiographical novel written by the confessional poet, novelist and short-story writer Sylvia Plath (1932–1963). It has been often cited as a recommended reading within the medical humanities, because of its powerful description of depression and the understanding-by-experience of the related psychiatric treatments. This brief article, primarily directed at the clinically oriented reader, presents a selection of excerpts from The Bell Jar to illustrate the main diagnostic features of clinical depression and the vital role of therapeutic relationship quality in hindering or facilitating treatment outcomes and recovery.