Doctor Who finally returned with the episode "Rose" on BBC One on 26 March 2005. There have since been nine further series in 2006–2008 and 2010–2015, and Christmas Day specials every year since 2005. No full series was filmed in 2009, although four additional specials starring David Tennant were made. In 2010, Steven Moffat replaced Davies as head writer and executive producer. In January 2016, Moffat announced that he would step down after the 2017 finale, to be replaced by Chris Chibnall in 2018. In addition, Series 10 will debut in Spring 2017, with a Christmas special broadcast in 2016.