Kathi Lynn Austin has targeted, investigated and helped to bring down some of the world's most dangerous arms dealers, exposing transactions that fuelled the Rwandan genocide and shutting down smuggling networks that helped power years of civil war in the Congo. But she is neither a cop nor a CIA agent nor a crusading prosecutor. She’s merely an American civilian with a deep sense of moral outrage and a deeper reservoir of courage. This weekend's bonus is an episode from our newest podcast, The Power of One. In this episode, Austin herself joins host Sarmishta Subramanian to describe Austin's unlikely career path into investigating the illicit arms trade, some of whose treacherous players she has met face-to-face. In doing so, she has gathered leads and evidence against everyone from a global gun kingpin to a network supplying guns to rhinoceros poachers. Says one colleague: “I’ve seen her living out dramatic detective stories, all in the name of peace and social justice and protecting our environment." If you like this episode, you can find The Power of One right here. We'll be back with a fresh Big Story on Monday. Enjoy!