Reading Bion's Transformations is an in-depth reading of Bion’s 1965 work, Transformations, and investigates the epistemological concept of "O" introduced by Bion. Throughout the book, Bion’s conceptual and unconventional text is discussed step-by-step, with a focus on the first three and last three chapters. The epistemological references are highlighted and analysed, allowing the reader insight into how to do a deconstructive psychoanalytic reading, acknowledging that Bion raised psychoanalytical thought and practice to new levels. The authors’ reading both de-focuses and re-focuses several theoretical statutes of O discussed by Bion in 1965. Reading Bion’s Transformations is an essential read for those approaching Bion’s work for the first time, as well as those seeking to better understand his theories and the metapsychological and epistemological impact of the concept of transformation within psychoanalysis.