Kingdom on 2 February 2012 by Buster Books. The novel is about twins Matt and Emily ("Em") Calder who share an ability that allows them to make artwork come to life, due to their powerful imaginations. Their ability is sought after by antagonists who wish to use it to breach Hollow Earth—a realm in which all demons and monsters are trapped. Two sequels from the same team concerning Hollow Earth followed – The Bone Quill (2013) and The Book of Beasts (2014). This was followed by a second trilogy (the Orion Chronicles) continuing the adventures of Matt and Em, in Conjuror (2016), Nephilim (2017) and Inquisitor (2018). They also published a novel featuring Captain Jack, Torchwood: Exodus Code in 2012. In 2018, John and Carole Barrowman teamed up with Legendary Comics and graphic novelist Erika Lewis to create Acursian, featuring a modern-day anti-hero dealing with Celtic mythology. Charity and activism Barrowman worked with Stonewall, a gay rights organisation in the UK, on the "Education for All" campaign against homophobia in schools. In April 2008, the group placed posters on 600 billboards that read, "Some people are gay. Get over it!" Barrowman contributed his support to the project asking people to join him: "Help exterminate homophobia. Be bold. Be brave. Be a buddy, not a bully." That same month, Barrowman spoke at the Oxford Union about his career, the entertainment industry, and gay rights issues. The event was filmed for the BBC programme The Making of Me, in an episode exploring the science of homosexuality. He was voted Entertainer of the Year in 2006 by Stonewall, and placed on the "Out 100" list for 2008, an annual list of notable LGBT people compiled by Out magazine. In June 2010, Barrowman met with then-Conservative Party leader and Prime Minister David Cameron as a representative of the LGBT community. Barrowman was one of 48 British celebrities who signed a public notice warning voters against Conservative Party policy towards the BBC prior to the 2010 general election. In the 2012 presidential election, Barrowman endorsed Democratic Party candidate Barack Obama, who was running for re-election. Barrowman publicly supported Scotland remaining in the United Kingdom in the 2014 Scottish independence referendum, and was one of 200 public figures who were signatories to a letter to The Guardian opposing Scottish independence. Personal life Barrowman is known for speaking in his American accent while in public but switching