follows some of the hardest-working crime scene cleaning companies in Britain and the USA that help people get their lives back to normal after the most traumatic events imaginable.From dealing with the aftermath of murder, drug dens and arson attacks, crime scene cleaners are part hazardous material clean-up crews and part therapists, on-call 24/7 to some of the most horrific crime scenes and sometimes putting their own lives in danger – and they're about to reveal all in this captivating new series.