with the exception of the Telos novellas. Despite the character of Martha Jones having left the television series at the end of the 2007 season (although she subsequently appeared in several episodes of the 2008 season), the novels released in early 2008 continued to feature her as a companion, rather than the Doctor's new companion, Donna Noble. Donna featured in all three of the novels released in late 2008. The Boxing Day 2008 release saw the series cover new ground with one book featuring Donna Noble, one book covering Martha Jones' adventures between the episodes "The Sound of Drums" (2007) and "Last of the Time Lords" (2007), and one book featuring the Doctor travelling without a companion following the events of "Journey's End" (2008). The 2009 releases (including 6 books in the main series, 1 novella and The Darksmith Legacy) all follow the mould of the Doctor travelling without a regular companion. These books also feature aliens from the New Series. Whilst this is not the first time this has happened (The Monsters Inside), it is the first time they are on the cover, or referenced in the title. In 2020 BBC Books released two new novels featuring the Tenth Doctor to tie in with the Time Lord Victorious multi-platform storyline. The Eighth and Ninth Doctors also appeared in both books. Eleventh Doctor novels The series of Eleventh Doctor novels began in April 2010, with a new cover design, amending the Gallifreyan numbering system on the spine. The titles quickly reached sales numbers of the previous Tenth Doctor novels, and a further batches of three books have been released on a regular basis since July 2010. In October 2009 Michael Moorcock confirmed that he would be writing a one-off, supersize novel, combining prose with hand-drawn sketches, images and exclusive artwork. The title was confirmed as The Coming of the Terraphiles, and it was released in November 2010. It did not form part of the usual range of novels, and featured characters from Michael Moorcock's Second Ether books. Two further books followed in the hardback range, The Silent Stars Go By, released in September 2011, and Dark Horizons, the only novel released that year, in July 2012. In April 2011 BBC Books launched a new range of "chapter books" that offer readers aged 8–12 two stories in one publication (or "2in1", which appears on the books' covers). The first two releases