In depth stories and investigations.
What Happened to Paloma?
HS2's story begins with a blank piece of paper.
A British doctor sparks a global health panic about the safety of vaccines.
Two Welsh detectorists stumble upon a Viking hoard 鈥� estimated to be worth up to 拢12m.
Sidhu Moose Wala becomes a rap sensation but as fame grows so do threats
File on 4 Investigates: News-making original journalism.
A CIA agent hears a strange sound in Havana - and his life begins to fall apart.
