A video of an extrajudicial killing haunts Aliaume Leroy - but how do you get to the truth from a short film posted on social media? 

Aliaume found himself banding together with open source investigators across the world in a race to uncover the truth behind the atrocity. This is the story of how they did it.

Read all about it: https://www.bbc.co.uk/news/av/world-africa-45599973/cameroon-atrocity-finding-the-soldiers-who-killed-this-woman

Hosted and produced: Maeve McClenaghan

Production support: Alice Milliken

Theme music: Dice Muse

This series of The Tip-Off is brought to you with support from the Bureau of Investigative Journalism and funding from Charities Aid Foundation. 

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