Abstract: A display case security apparatus has a lower chamber having a top partition wall and a bottom wall. There is an upper chamber. A partition wall has a plurality of ports therethrough that provide access between the lower chamber and upper chamber. There is at least one trapdoor, hingingly connected to the partition wall. There is at least one trapdoor biasing device, that has one end attached to the trapdoor and that has another end attached to the bottom wall. At least one security door, slidably attached to the partition wall, slidingly closes the ports when the trapdoor has moved to the open position. There is at least one security door biasing device that has one end attached to the partition wall and that has another end attached to the security door. The security door is secured in an open position by at least one first lock device attached to the partition wall.