Notwithstanding estimates that 12.3 million persons today are subjected to conditions analogous to slavery, public international lawyers have almost completely ignored slavery and related institutions in recent decades. This article explores the phenomenon of forced labour in the Amazon, where anywhere between 25,000 and 100,000 people are compelled through trickery and coercion to work in subhuman conditions. After outlining the legal regime governing slavery-related practices, the author examines why the Brazilian government has failed in its efforts to secure compliance within its own borders of its obligations under anti-slavery and human rights conventions. The author then argues that holding the Brazilian state responsible and assessing monetary damages is not in fact the most effective and fair way to secure the human rights of the victims of forced labour, and that international criminal sanctions for the individual perpetrators – including prosecution in the ICC for crimes against humanity – is a viable and preferable alternative.