John Bowlby's Secure Base is a book about attachment theory.
You can hear the core of the theory from the developer of attachment theory and vividly understand the specific background that led to the theory's development.
It covers the methodology and characteristics of attachment theory that distinguish it from psychoanalysis, how parental mis-parenting affects psychopathology, and how attachment can be clinically applied in therapeutic relationships.
It will serve as an interesting guide for counselors, researchers, and the general public interested in attachment theory.