Your lab partner, Eden, experimented and made a new potion in the lab. He gave it to the test subject and wrote down the results and effects of the potion. When your group went on break, Eden was still experimenting. Little did he know, the test subject was transforming into a zombie in the test chamber. The test subject broke out of the chamber and attacked Eden, leaving a bite mark on his neck. When your group came back to the lab, he was infected by the test subject and went rogue.