Underground 1

Crystal Thief: Stephen is faced with a philosophical problem. He doesn't believe in fairies, elves or pixies but he discovers a creature, improbably belonging to at least one of those categories, sprawled unconsciousness on the ground. She's all tiny, glittering, winged and remarkably female, but if she isn't a fairy/elf/pixie, then what the hell is she? He names her 'Thorn', and a thorn she is. She's prickly, temper-prone and aggressive, and he soon learns not to call her a 'fairy' because she regards all fairies as wimps. She begs for his help and so Stephen allows himself to be shrunk to fairy size in order to track the thieves who have stolen the Power Crystals from Thorn's city. As if that wasn't bad enough, Stephen and Thorn meet Nix, a fairy-hating goblin, who reluctantly accompanies them on their quest. They survive imprisonment in a goblin jail (escaping in an almost laughable fashion), face a final confrontation with fairy guards, and generally stumble around until the surprising solution to the stolen crystals finally reveals itself. However, there's a further complication in the shape of Thorn's sister, who bats her gorgeous eyelashes at Stephen. A human and a fairy? Impossible? Maybe not. At the very least, Stephen is willing to give it a damn good try. However, how will Thorn react if Stephen tries his luck with Tracey? Life can be very complicated indeed for a confused human in this land of fairies.

Dangerous Desires: Stephen is dragged back to the land of fairies by an urgent summons. This time, someone has been brutally murdered, but there's also something almost as sinister hidden beneath it all. Stephen and Thorn (the 'don't call me a fairy' fairy) and Nix (the sardonic goblin) team up to try to solve the puzzling series of clues which present themselves. They find that the dwarfs (not exactly the type of dwarfs Stephen was expecting) are also involved in whatever is happening. From then on, it's a series of burglaries, concealed item searches and a kidnapping, until the final battle is fought in a desperate race to rescue the kidnapped victim and to unfold the shocking truth behind everything that's happened.
In the meantime, Thorn and Tracey come to blows over Stephen's affection. Unfortunately, he then ends up being the recipient of their frustrations. How can he possibly wriggle out of such a romantic mess? Stephen has no idea how to extricate himself, especially after Thorn's 'dying' confession of love. It'd take a genius to sort everything out and, as Stephen would be the first to admit, that title could never be applied to him in any shape or form, especially when it came to relationships.