In 2005, BBC Books began to phase out the EDA and PDA lines as it launched a new series of books (informally dubbed the New Series Adventures) based upon the newly revived television series. In January 2007, BBC Books launched a new line of original novels based upon the Doctor Who spin-off series, Torchwood. In 2010, BBC Books began an annual series of "deluxe" standalone novel releases, aimed at an older readership and featuring "name" authors. BBC Books also publishes non-fiction and reference works based upon the series.