Nicolas Sarkozy's memoir, 'A Prisoner’s Diary', recounts his 20 days in La Santé prison, describing it as a harsh and violent environment. He details his solitary confinement, poor living conditions, and the psychological toll of incarceration. Sarkozy asserts his innocence and discusses political strategies for his party, including potential alliances with the far-right. He also reflects on his relationship with Emmanuel Macron, expressing disappointment over not receiving support during his imprisonment. The book aims to resonate with readers and is released strategically before the holidays.