Detectives from Essex Police cracked a multimillion-pound international smuggling ring with roots in a Northern Ireland haulage business. The documentary reveals how detectives pieced together evidence, including the role of a witness known as "Witness X", and travels to Vietnam to meet families who lost loved ones in the back of a lorry.
Hunting the Essex Lorry Killers
A 999 call from a lorry driver in Essex sparked a massive police investigation, leading to a search for those accountable for the tragic deaths of 39 Vietnamese migrants.
