At the crime scene a blood expert photographed a pattern of yellow-green haemolymph splattered on a wall. The victim was about seventeen. He had put up a fight before being overwhelmed. The force of decapitation had rolled his head into a corner. His naked body had been partly consumed and lay half way off a bed in a large, reddish-brown pool of congealing blood.
"Damned kids." Detective Spencer thought as he surveyed the scene. "You'd think that they would learn. Didn't the boy know that you never take a mantis girl home and then renege on a promise of sex?"