She stepped away from Edric's tank, shaking her head in annoyance at the thick odor of melange.

Edric took this moment to pop a melange pill into his mouth. He ate the spice and breathed it and, no doubt, drank it, Scytale noted. Understandable, because the spice heightened a Steersman's prescience, gave him the power to guide a Guild heighliner across space at translight speeds. With spice awareness he found that line of the ship's future which avoided peril. Edric smelled another kind of peril now, but his crutch of prescience might not find it.

"I think it was a mistake for me to come here," Irulan said.

The Reverend Mother turned, opened her eyes, closed them, a curiously reptilian gesture.

Scytale shifted his gaze from Irulan to the tank, inviting the Princess to share his viewpoint. She would, Scytale knew, see Edric as a repellent figure: the bold stare, those monstrous feet and hands moving softly in the gas, the smoky swirling of orange eddies around him. She would wonder about his sex habits, thinking how odd it would be to mate with such a one. Even the field-force generator which recreated for Edric the weightlessness of space would set him apart from her now.

"Princess," Scytale said, "because of Edric here, your husband's oracular sight cannot stumble upon certain incidents, including this one... presumably."

"Presumably," Irulan said.

Eyes closed, the Reverend Mother nodded. "The phenomenon of prescience is poorly understood even by its initiates," she said.

"I am a full Guild Navigator and have the Power," Edric said.

Again, the Reverend Mother opened her eyes. This time, she stared at the Face Dancer, eyes probing with that peculiar Bene Gesserit intensity. She was weighing minutiae.

"No, Reverend Mother," Scytale murmured, "I am not as simple as I appeared."

"We don't understand this Power of second sight," Irulan said. "There's a point. Edric says my husband cannot see, know or predict what happens within the sphere of a Navigator's influence. But how far does that influence extend?"