16-and-a-Half Blocks - The Mobile Unit must bring a villain to The 16-and-a-Half Blocks - The Mobile Unit must bring a villain to The Big O's safe house. Curriculum: Mapping. Follow the Leader - The Big O's safe house. Curriculum: Mapping. Follow the Leader - The Mobile Unit goes undercover as villains to try and stop The Shadow. Mobile Unit goes undercover as villains to try and stop The Shadow. Curriculum: Deductive Reasoning. Curriculum: Deductive Reasoning.