In recent years, the group Forensic Architecture began using novel research methods to undertake a series of investigations into human rights abuses. The group uses architecture as an optical device to investigate armed conflicts and environmental destruction, as well as to cross-reference a variety of evidence sources, such as new media, remote sensing, material analysis, witness testimony, and crowd-sourcing. In this talk, Eyal Weizman provides, for the first time, an in-depth introduction to the history, practice, assumptions, potentials, and double binds of this practice.