“It’s so tiny,” Julie said disappointedly, her face pressed to the window of seat 17A.

As indeed it was. They were nearing the end of their three-hour flight from London, and from the air Gibraltar was a bit of a let-down, an insignificant little worm of a peninsula – shaped remarkably like a human vermiform appendix, Gideon thought – sticking improbably out into the Mediterranean from the vast, flat mainland of Andalusian Spain. They could easily see the whole of it from their seats over the wing as the Boeing 747 banked out over the Strait: the humped mass of the famed Rock itself, surrounded by its skirt of flat, coastal plain, with almost all of its population of thirty thousand crowded into the narrow, dense warren of streets at the base of its western flank.

“It is, isn’t it?” Gideon agreed. “I imagine it’ll look more impressive when we’re down there looking up at it.”

“Oh, it will, it will, I can assure you of that.” The affable, self-possessed voice, borne on a faint waft of Irish whiskey, came from 18B in the row behind them. “And more impressive still when you’re standing on top of the Rock looking down over the edge.”

The voice was that of Professor Emeritus Adrian Vanderwater, who had leaned forward to make himself heard, unconcerned with not having been invited, and unapologetic for having been eavesdropping. Vanderwater, the renowned archaeologist who had directed the Europa Point dig five years earlier, was of the opinion that such niceties were neither here nor there, at least inasmuch as they applied to him. He was, after all, Adrian Vanderwater. Who could be other than pleased to have him participate in a conversation?