18. 22 Minus 1 Equals 4

Mitch uses his power to bump Lydia off the 22nd floor to make Claude happy. Even though Lydia's transfer has made life on the 22nd floor serene, Claude tries to bring her back from the 4th floor to ease Owen and Ramon's suffering. Meanwhile, Carl is angered that they're using his cafeteria to hold a blood drive, but he changes his tune when he meets a gorgeous nurse.