Herbie Brennan

Troubled by family problems, Henry finds his life taking a whole new dimension when he and his friend, old Mr. Fogarty, become involved with Prince Pyrgus Malvae who has been sent from the faerie world in order to escape the treacherous Faeries of the Night.

When Henry Atherton returned to his own life in the suburbs of London,
he thought all was well in the Faerie Ream. His new friend Pyrgus, the
crown prince of Faerie, was about to be coronated as Purple Emperor.
But then Princess Holly Blue arrived on Earth, seeking Henry's help once
more.

A plot to assassinate Pyrgus is afoot, but that's not the
worst of their problems. Pyrgus's father, the murdered Purple Emperor,
...

Two years after leaving the Faerie Realm, Henry Atherton finds a middleaged Pyrgus and his new wife, Nymph, in Mr. Fogarty's backyard. They explain that a terrible plague has taken hold of the Faerie Realm, causing faeries to age so rapidly that Pyrgus had to flee in order to save himself. Determined to help his friends, Henry returns to the realm, hoping to find a cure and perhaps win his way back into the heart of Queen Holly Blue. But the plague...

A young English thief stumbles on, and subsequently is recruited for, a super-secret operation that trains teenagers in remote viewing and astral projection techniques in order to engage in spying.