Would you buy Daniel Radcliffe as a younger Jon Hamm? The stars of Harry Potter and Mad Men are circling a four-part British miniseries about Russian doctors after the first World War, and they’ll be playing the same character in different time periods. (The news was originally reported by the often-dubious Sun, but it tracks with what Vulture has been hearing.) We can go fetch you a defibrillator, if you need one.