Desc: Stem Cell: Directed by Giuseppe Ivan David Di Giorgio. With Giuseppe Ivan David Di Giorgio, Roberta Barbiero, Pietro Sala, Alberto Sette. A brilliant neurosurgeon is found murdered in his operating room. The scene is disturbing. Those who killed him used the same tools as his specialty. Who is the killer? A psychopath? Anyone inside the hospital? Commissioner Lorenzo Aliprandi and his homicide team will fight against time to stop the killer who continues to kill without leaving any evidence behind him except a trail of blood.