Compelling Tribute (Imperial)

Walkthrough
At the Rift Imperial Camp, Legate Rikke informs the Dragonborn that the steward to the Jarl of the Rift, Anuriel, is involved with the Thieves' Guild. She suggests that obtaining evidence of this involvement would be beneficial to the Legion in their campaign to regain the Rift.

Find evidence
Travel to Mistveil Keep in Riften, the Dragonborn finds a letter on the end table next to Anuriel's bed.

Blackmail Anuriel
The information in the letter is sufficient to confront the steward and gain her cooperation in exchange for keeping her secret.

Report to Legate Rikke
Once Anuriel's cooperation is assured, the Dragonborn reports back to Legate Rikke who then orders them to help intercept a wagon of goods bound for Riften.

Meet the men
So it is back to Riften to meet up with the Legionnaires, led by Hadvar.

Follow Hadvar and ambush enemy scout
Follow Hadvar and ambush the enemy scout who will divulge the location of the caravan.

Take over the caravan
Take over the caravan and loot it.

Report to Hadvar
Let Hadvar know that the mission was successful.

Report success to Legate Rikke
Return to Legate Rikke with the good news.