Into the slammer Billy goes for the crime of attempted room-mate assault with a kitchen weapon. The penalty – an over night stay in the ‘cage’ that is used to store food and essentials in the ‘cold room’. The concept of a cold room is having a room that ventilates cooler outside air thru it in lieu of refrigeration or ice. Also, the cage serves as a refuge if they are ever completely trapped with zombies over running the apt.This if the first time it has been used as a jail. It was once used to quarantine Rex in case he was zombified – but I don’t think that counts as jail.