Murderous truths hide in human remains scrutinized by a closely knit team of forensic pathologists at London University. How can the good doctors explain stab marks on a teenager who fell to what looked like her accidental death? The missing face on the dumped body of a former TV journalist? The exact DNA match of two murder victims? Grim clues keep viewers guessing in six two-part episodes of this long-running, award-winning BBC crime drama.