Police are called to a murder scene in Fulham. They find a dead body – but no evidence of murder… Two detectives struggle to understand what has happened. But when they meet a mysterious old man who claims the victim was killed by a Satanist, little do they realise their lives will be changed forever…
Full details here: http://www.lulu.com/content/paperback-book/the-magus/7274304
Sol Ascendans - The Website of Alex Sumner 
Things are moving on apace with the book. Having sorted out the "galleys" (as it were), the thing should be available on Amazon some time in August.