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How does a scientist know from a blood stain on a pair of pants that it came from a drip and not the smearing of a murder weapon? How can he tell exactly how long a body has been stuffed in a crawl space? What tips a forensic anthropologist off that an exhumed dead body didn't just die accidentally, but was killed by a savage murderer?

Bloodwork is a brand new series focusing on incredible criminal cases in which the resolution was brought about by the use of forensics. Each episode highlights not only a fascinating case, but the real-world investigator without whom it could never have been solved.

Watch clips for an exclusive insight into the psyche of a murderer