names left out of england's 45 man training squad. 20 years ago, the body of a boy was found in this stretch of the river thames — his head and limbs had been removed. it's thought he'd been trafficked to the uk from nigeria and then murdered in a brutal ritual. two decades later, it's the longest running child murder investigation in the recent history of the metropolitan police, and today they're making a fresh appeal for information. angus crawford's report contains details some viewers may find upsetting. a grave with no name. an unknown child. the police called him adam. now imagine spending 20 years thinking you could have protected him... translation: ..remembering how you found him... the butchered torso