It's a fantasy role-playing game.

DM: You are Keyleth, a half-elf druid . You are the member of the famous group of adventurers. Previously, They don't find any hidden compartments in Riskel's room. Vex asks a guard when the last time was someone saw Riskel.
DM: Pretty much any caster of a decent, mediocre skill for casting can be done, and it's not a terribly uncommon enchantment, it's just expensive.
Player: Do we have any idea when the letters came in to Emon that we were successful?
DM: Which ones? You sent different ones at different times.
Player: Either or. When did they get them, do we know? Can we find that information?
DM: The letter that you guys had sent that just absolved you of your stuff that you had sealed, that was sent closer to Winter's Crest, and that has not arrived yet. The one that you sent to Allura, regarding the inspection of the ziggurat--
Player: Yes, that one.
DM: That arrived about a week and a half ago, so-- that arrived a lot sooner because you sent it a lot sooner, and Allura's already left, and apparently has gone to seek some allies to help her--
Player: And it's been about three days since they've seen Riskel?
DM: About three days, yeah.
