One of the most chilling two-parters of the revived Doctor Who was The Empty Child and The Doctor Dances, penned by current showrunner Steven Moffat, where Christopher Eccleston's Doctor and Billie Piper's Rose travelled back to World War II and contended with a haunting by spooky kids in gas masks cornering people and asking are you my mummy? That refrain because one of the creepiest catchphrases in television history, even when it turned out that the line wasn't a slightly heartbreaking plea by a bunch of orphaned children, but a distress call being sent out by a warrior race of aliens, one of whom's ships had crash landed on Earth. More poignantly, though, it played into Rose's own character arc. Throughout the first season of the revived show, the absent father of the Doctor's companion weighed heavily upon her. Eventually she got to confront the missing patriarch but before that her own "orphan" status was constantly called back to by those spooky kids.