Hill School became a recurring location. The first episode of the series, "Deep Breath", included a brief flashback to Clara's first day as a teacher at Coal Hill. In the second episode, "Into the Dalek", viewers were introduced to Danny Pink, a maths teacher at Coal Hill School and romantic interest for Clara played by Samuel Anderson. Danny is a recurring character in series 8. Popular press and fan reviewers alike suggested that the presence of two Coal Hill School teachers may be a deliberate echo of the series' origins. Writer Steven Moffat said when introducing Danny Pink: When asked about the significance of Coal Hill School, Anderson said, The episode "Time Heist" included a brief scene between Danny and Clara set in the school. The subsequent episode, "The Caretaker", was almost completely set in and around Coal Hill School, and involved Clara struggling to keep her life with the Twelfth Doctor separate from her personal and professional life. Den of Geek reviewer Simon Brew said that in "The Caretaker", Coal Hill School "gets woven even more into the fabric of Doctor Who". Writing for The Guardian, Dan Martin said, "Ofsted would be plunged into crisis if the true nature of Shoreditch’s Coal Hill school ever became apparent," and suggested that it was telling that the Doctor had not informed Clara of his own history with Coal Hill. Patrick Mulkern of the Radio Times noted that, although not explicitly explained in the episode, the Skovox Blitzer (the episode's threat) is drawn to Coal Hill School because of the Doctor's past visits there. Three schools were used for Coal Hill filming locations for "The Caretaker": Gladstone Primary School, Cardiff (again), Holton Primary School in Barry, and Tonyrefail School. The episode "Kill the Moon" included scenes set at Coal Hill in its beginning and end, and in its primary setting on the Moon, the episode involves the Doctor taking Clara's student Courtney Woods to the year 2049 to be the "first woman" on it. "In the Forest of the Night" featured a group of Year 8 students from Coal Hill on a school trip with Clara and Danny, and also included two short flashback scenes set in the school. In "Death in Heaven", students of the school can be seen with a Cyberman on Missy's mobile gadget when confronting her rival and former friend the Doctor. Series 9 (2015) In "The Magician's