Being in the CIA is hard. Stealing the CIA's secrets is even harder.
Every player is a CIA agent. Agents' job is to protect the secrets scattered throughout CIA HQ. Agents attempt to weed out moles in the agency by watching other agents, tracking crimes that occur in the building, and ultimately killing agents they suspect of being moles.
One player is a mole disguised as an agent. Moles must blend in to the agency while simultaneously stealing secrets. Moles must poison agents that guard the secrets. However, leaving bodies behind may expose them as the mole. So moles must be quick to leave the scene of the crime before they're caught by other agents.
Agents have a finite amount of bullets they can use to kill the suspected mole. Accidentally killing a normal agent blacks the screen for N seconds.