If "Class" captivates you, you're probably intrigued by narratives where young protagonists face both the trials of adolescence and the daunting task of confronting cosmic threats. "Class" is a British science fiction drama and a spin-off of the iconic "Doctor Who" series. Set in London's Coal Hill Academy, the show centers on a group of students and their teacher, Miss Quill, played by Katherine Kelly. These characters are thrust into the role of defending their school—and …