Oliver's first book as author, Twilight of Kerberos: The Call of Kerberos, the sixth book in Abaddon's Twilight of Kerberos series, was published in October 2009.[4] In September 2010, Abaddon announced the sequel, Twilight of Kerberos: The Wrath of Kerberos, also by Oliver, for a November 2011 publication date.[5] The book has been described as the "beginning of the end" of the shared world series' overarching storyline.[6]
Oliver's first anthology as editor, The End of the Line: An Anthology of Underground Horror,[7] was launched by Solaris at Fantasycon in Nottingham in September 2010.[8] In October 2010, Solaris announced Oliver's second anthology, House of Fear: An Anthology of Haunted House Stories,[9] due for publication in October 2011.