The novel "The Fifth Woman" by Henning Mankell explores the complexities of human nature and the darker aspects of society, embodied in the quote "Under it all was quagmire." This phrase suggests that beneath the surface of everyday life lies a tangled mess of unresolved issues and moral ambiguity. Mankell's narrative delves into the lives of his characters, often revealing the turmoil and confusion that shape their actions and relationships.

As the story unfolds, readers are invited to reflect on the multiple layers of human experience, illustrating that what may seem simple on the outside can often be steeped in chaos and contradiction. The characters grapple with their personal dilemmas and societal challenges, ultimately depicting a world where clarity is elusive and understanding requires navigating through a metaphorical quagmire.