Crokus was half-way across the rooftop, one hand tracing the silk finery of the turban snug over his heart, when a coin clattered loudly at his feet. Instinctively he pounced down and trapped it beneath both hands. Something hissed through the air immediately above his head, and he looked up, startled, then ducked again as a ceramic tile shattered twenty feet away.

He moaned with sudden realization. As he clambered to his feet one hand absently collected the coin and tucked it under his belt.

Talo cursed in disbelief. He lowered the crossbow and stared down at the figure, dumbfounded, until his instinct for danger asserted itself one last time. Whirling, he caught a blurred glimpse of a cloaked figure standing before him, arms raised. Then the arms flashed down and two long, grooved daggers slid into Talo's chest. With a final baffled grunt, the assassin died.

A grating sound reached Crokus's ears and he spun to face the belfry. A black shape tumbled from between the pillars and landed with a thump fifteen feet away. Moments later a crossbow clanged down beside it. Crokus looked up to see a silhouette framed between the pillars, glittering long-bladed knives in its hands. The figure seemed to be studying him.

'Oh, Mowri,' the thief prayed, then turned and ran.

In the K'rul belfry the killer's oddly shaped eyes watched the thief scamper towards the rooftop's far side. With a slight lifting of its head the killer sniffed the air, then frowned. A burst of power had just frayed the fabric of night, like a finger poking through rotted cloth. And, through the rent, something had come.

The thief reached the far edge and disappeared over it. The killer hissed a spell in a language older than the belfry and the temple, a language that had not been heard in this land for millennia, then sprang from the tower. Enwreathed in magic, the killer's descent to the rooftop below was slow, controlled. The landing came as a light brush on the tiles.

A second figure appeared, its cloak spread like a black wing, from the above darkness to join the first. Then a third, also descending in silence, landed on the rooftop. They spoke briefly. The last to arrive muttered a command, then moved off. The remaining two exchanged a few last words, then set out on the thief's trail, the second one preparing its crossbow.

Ten minutes later Crokus leaned against the sloped roof of a merchant's house to regain his breath. He'd seen no one, heard nothing. Either the killer hadn't pursued or he had managed to lose him. Or her. In his mind returned his single vision of the figure as it stood in the belfry. No, unlikely that it could be a woman – too tall, perhaps six and a half feet, and thin.