A feature on CSI dogs.
Danny the sniffer dog has just found a single drop of blood in a puddle on a country lane. The police specialist told the presenter that these dogs can sniff out evidence such as bone matter, flesh, blood or hair follicles on a car even after it has been cleaned. Danny and his handler then searched a people carrier and found a millimeter square of flesh (admittedly it was pork not human and so incredibly unreliable)
I'm sure that this will be on iPlayer later today.
Most unhelpful, BBC. Most unhelpful