They're called "sleepers".
She's probably testing the fatal dose rates of sarin and sending the info to Ayman al-Zawahiri.
Hats off to your BIL and SIL for helping our enemies.
If what I just wrote made you sad or angry,
it was probably just a joke.
"Hats off to your BIL and SIL for helping our enemies."
Nope, my hat's off to them for possibly saving the life of a fine person.