Book-worm would just outright relay the physical appearance  of the monsters as well as the stranger. They'd also mention the aura of power and would strain their eyes to see whether or not the person themselves was magic or if it came from a specific item on them. The process would take several minutes though.

Bookworm would also relay the stranger's message to Ariues.

[b]probably for the best you reply, paladin. [/b]