b658aed6__World_Interactions___UESPWiki__Details
[Encounter Name] Courier Delivering an Important Message [Options] Reading the letter adds a map marker. To read the letter you can persuade the courier to give it to you, kill him, or read it while pickpocketing him (it is not necessary to take it). [Requirements] None [Details] 
A courier taking a letter to an investor.
Skyrim:World Interactions - UESPWiki
Details