The Bitter Cry of London's Outcasts: A Study of the Miserable Poor by Andrew Mearns and William Preston is a deep dive into the world of abject poverty in 19th century London. The authors examine the lives of those who are rejected by society, studying their conditions and the reasons for their sad situation. The book analyzes in detail the social, economic and political aspects of the lives of the poorest sections of the London population, trying to shed light on the issues of inequality and injustice. "The bitter cry of London's exiles" invites readers to think about the problems of poverty, social justice and humanism, reminding of the importance of compassion and mutual support in any society.