Edinburgh's Underground City is famous. But what is it, where is it and how did it come about?

The history. The legends. The locations. This is the ultimate guide to a place of mystery and enchantment.

Jan-Andrew Henderson is a multi-award-winning author, historian, ex-tour guide and expert on underground Edinburgh.

'One of the UK's most promising writers' - Edinburgh Evening News

'One of the UK's best talents' - Lovereading.co.uk

'Jan Henderson writes the kind of thrillers that make you miss your stop on the bus'

- Times Educational Supplement

'A moving, funny and original writer' - The Austin Chronicle

'Jan Henderson has written some incredible books... One of my favourite authors'

- Sharon Rooney (star of My Mad Fat Diary and Dumbo)

'If there were more books like yours out there maybe people would be reading more'

- Charlie Higson (Young James Bond and The Enemy series)