In other situations it behooved the CIA to locate and weaponize a poison where death came after a delay, sometimes with an incubation period of about eight or twelve hours, sometimes much longer. The SO Division’s Agent Branch worked to find poisons that could make a target mildly ill for a short or long period of time followed by death, very ill for a short or long time followed by death, or any number of combinations, including mild to extreme illness followed by death.
