"Briefing for a Descent into Hell" is a novel written by Doris Lessing, first published in 1971. It's a complex and psychologically rich work that delves into the mind of its protagonist, Charles Watkins, a brilliant but troubled academic who descends into madness. The story begins with Watkins wandering the streets of London in a state of confusion and disarray, seemingly disconnected from reality. As the narrative unfolds, we learn about Watkins's past, his relationships, and his inner turmoil. Through a series of flashbacks and hallucinatory episodes, the novel explores themes of identity, memory, and the nature of reality. One of the key elements of the novel is its exploration of the Jungian concept of the collective unconscious. Watkins's descent into madness is portrayed as a journey into the depths of his own psyche, where he confronts his personal demons and grapples with the universal themes of human existence.