Agent Lorcalin is a Thalmor wizard which hunts down Talos worshippers near one of the unmarked shrines. He is encountered during the quest "Elisif's Tribute".
Interactions
Elisif's Tribute
During Elisif's Tribute, the Dragonborn may encounter Lorcalin at the Shrine of Talos, southeast of Shimmermist Cave. He will be hostile, and attack on sight. He has a set of orders on his body, which explains that he had been sent there to kill the "heretics" worshiping Talos.