Doctor Who (series 1) Eccleston as the ninth incarnation of the Doctor, his only series in the role, accompanied by Billie Piper, as his first and main companion Rose Tyler, whom he plucks from obscurity on planet Earth, and to whom he grows increasingly attached. He also travels briefly with unruly boy-genius Adam Mitchell, played by Bruno Langley, and with 51st-century con man and former "Time Agent" Captain Jack Harkness, portrayed by John Barrowman. Episodes in the series form a loose story arc, based upon the recurring phrase "Bad Wolf", the significance of which goes unexplained until the two-part series finale. Alongside the "Bad
Rose (Doctor Who episode) later said, "They handled it very badly, but they issued an apology and I dropped it" in a 2010 interview. After it was announced that Eccleston was leaving the BBC said that they were in talks with David Tennant to take over the role and he became the bookmakers' favourite, with odds at 1/10 and William Hill refusing to take any more bets on who would be cast as the new Doctor. A BBC spokesman said that they had "hoped, rather than expected" that Eccleston would continue in the role. "Rose" received positive reviews and was seen as a successful