Mouseburg Confidential is the second in-mission side job during To Catch a Mockingmouse. Find the Undercover Agent in the River Fever Line, tail the suspect to the handoff point, take the photo, recover the dropped briefcase, and turn it in for a reported 2-Coin reward.

How to start Mouseburg Confidential
Like Between Alpha and Omega, this job begins inside To Catch a Mockingmouse walkthrough. Watch for the Undercover Agent while moving through the River Fever Line section.
Do not assume you can clean it up after the chapter. It is one of the easiest missable side jobs because it breaks the normal hub pattern.
Walkthrough
Accept the assignment from the Undercover Agent
Speak with the agent to get the surveillance objective.
Tail the suspect
Follow the target through the warehouse and alley route without rushing directly into him. Use cover and keep enough distance that the tail does not break.
Photograph the exchange
When the suspect reaches the handoff point, use the investigation/photo prompt to capture the exchange.
Fight the response and recover the briefcase
Once the cover is blown, enemies rush the area. Clear them, then pick up the dropped briefcase and documents before returning to the agent.
Rewards
Current side-job batch notes list the reward as 2 Coins.
That is a small payout, but skipping the mission still hurts a completionist route because it counts toward the overall side-job total.
FAQ
Is Mouseburg Confidential a stealth mission?
It starts with a tailing section, but it ends in a normal firefight and evidence pickup.
Does Mouseburg Confidential start in the P.I. Office?
No. The Undercover Agent gives it to you inside To Catch a Mockingmouse.