Locked in a car, abandoned on a rubbish dump and left to die, 20-year-old student Catherine McArdle's fate leads DCI Red Metcalfe through the darkest recesses of a serial killer's mind. Show more

A student stung to death by bees, a woman overdosed on morphine, two female lovers hooked together like meat. Red Metcalfe and his team race to get ahead of a killer whose motives seem beyond reason. Show more

Red's sanity is stretched to the limit as Professor Robb helps him understand what lies behind the appalling suffering the killer is inflicting on the victims.