I really enjoyed this book. It's a compulsive read. It starts with police being called to an address in south London where a man has died, there is then speculation that even though the death seems to be by natural causes there may be a more sinister story behind it. There is a mysterious man who keeps appearing to the police officers and claiming that he knows there is more to the man's death, and that it may be linked to other recent deaths. The book takes a look at the subjects of satanic rituals, clairvoyance, mysticism, black magick, the occult. The Magus is full of believable characters which gives the book a realistic feel. It's an intriguing murder/mystery with a twist of the paranormal. It kept me hooked and I am now looking forward to reading book two in the series. The Magus is suitable for readers over the age of 18 due to explicit content.