Classical art professor and collector Dr. Jonathan Hemlock, who doubles as a professional assassin, is coerced out of retirement to avenge the murder of an old friend.Classical art professor and collector Dr. Jonathan Hemlock, who doubles as a professional assassin, is coerced out of retirement to avenge the murder of an old friend.Classical art professor and collector Dr. Jonathan Hemlock, who doubles as a professional assassin, is coerced out of retirement to avenge the murder of an old friend.