To what extent can journalists still trust their sources now that they are increasingly fed with fake news, disinformation and manipulated images and sound? And if journalists can no longer be sure of their sources, why should readers believe them?

Investigative journalist and two-time Pulitzer Prize winner Christiaan Triebert (formerly Bellingcat, now The New York Times) gives us an insight into how he combines digital detective work with traditional journalistic fieldwork to get to the facts, hold powerful actors accountable and reconstruct major news events.