Zinnie and her sisters live in the murky tunnels beneath Edinburgh's Old Town. They keep out of the way of the authorities and remain undetected. Until, that is, rumours of a ghost bring unwanted visitors into the caverns they call home. Among them, a young Arthur Conan Doyle, keen to investigate, and MacDuff, the shady owner of Edinburgh's newest attraction, the House of Wonders.
Caught up in a w...