As the party examines the still form of the vampire along with all its equipment a shade crosses Portho's face. All of a sudden the story unfolds in front of his mental eyes.
The upper sewers where Chrysolite grappled and pinned Ruby when she objected his wisdom, in spite of the she-elf's exceptional strength, catlike grace and outstanding martial prowess.
The lower sewers where Pearl detected the presence of evil in the generic direction of Chrysolite which they took to be the kuo-toa on the other side of the door the priest was facing.
The section called "correction facility" where the undead turned their backs to the party but it felt like they were obeying his command and not frightened by his divine presence.
The spider-infested upper ruins where Chrysolite proved to be more interested in objects of arcane and in martial artifacts than Malachite and Pearl.
And finally the lower ruins: the assault on the party; the dried-up corpses of Ruby and Malachite, with the twin punctures around the neck....
The cold, steely blue eyes and the silvery hair were misleading but the regal pattern of his clothing and some minor pieces jewelry leads to the recognition: Sermour is none other than the former party's "cleric," Chrysolite!
He wonders why the vampire spared him while killing the others; and why he left most of their equipment intact while picked up Malachite's belongings, including the twin curved daggers.
(hint hint...)
).