In Henning Mankell's book "One Step Behind," a central theme revolves around the fine line between normality and abnormality. The protagonist grapples with the challenge of distinguishing everyday behaviors from those that signal deeper issues. This exploration invites readers to reflect on societal norms and the moments when expectations shift into something unsettling.

The quest to identify the abnormal in human behavior often raises questions about morality, ethics, and the impact of external circumstances. Mankell adeptly navigates this complex terrain, urging readers to consider how quickly normal life can descend into chaos, and the implications of those shifts on individuals and communities alike.