In Haunting of Harrowstone, it is said that Vrood kills Prof. Lorrimor with "one of his phantasmal killer spells".
Okay, fair enough. However, when we get to Broken Moon and fight this necromancer, we find the following issue: He does not have Phantasmal Killer prepared, now is it listed as a spell his spellbook contains. The spellbook contains "contains all prepared spells, all 0-level spells, plus arcane eye, create undead, mirror image, and 1d6 random spells of levels 1–5"
Ergo, when i roll that 1d6, I MUST assign one of the spells, or the only one should I roll a 1, as Phantasmal Killer? Am I missing something?