Caitlin Snow is one of the smartest scientists on the Flash, but when Barry Allen visits Earth 2, he encounters Caitlin as the villain Killer Frost! How does Caitlin become Killer Frost? We have all the answers.
Caitlin Snow is one of the smartest scientists on the Flash, but when Barry Allen visits Earth 2, he encounters Caitlin as the villain Killer Frost! How does Caitlin become Killer Frost? We have all the answers.