Crack the Case: How to Beat the Damp Evidence Mission in Mouse P.I. For Hire

Detective work is never easy, especially when the weather is working against you. In Mouse: P.I. For Hire, the Damp Evidence mission has proven to be a stumbling block for many players. The…

April 21, 2026
2 min read

Detective work is never easy, especially when the weather is working against you. In Mouse: P.I. For Hire, the Damp Evidence mission has proven to be a stumbling block for many players. The objective seems simple—retrieve a lost item from a soggy location—but the execution requires a keen eye and steady paws.

The mission begins in the Sewer District, where a crucial clue has been dropped into the sludge. The challenge isn’t just finding the item; it’s the environmental hazard. The water level rises periodically, and submerging the evidence for too long will ruin it, resulting in an instant mission failure.

To succeed, you must use the Grappling Hook to swing across pipes rather than wading through the water. Locate the “Waterlogged Satchel” sitting on a rusted pipe platform. The trick is to grab it quickly during the water’s ebb phase and dash to the dry zone.

For those interested in the genre roots of such mystery adventures, the history of Detective Fiction on Wikipedia offers great insight.

Mission Snapshot

Here is a compact guide to completing the task efficiently:

ObjectiveLocationKey HazardStrategy
Find the SatchelSewer DistrictRising Water LevelsWatch the tide timer; move during the “Low Tide” phase.
Retrieve EvidenceRusty Pipe PlatformToxic Slime EnemiesUse stealth to bypass enemies; fighting risks alerting more.
Return to ClientDry Dock SafehouseTimer LimitTake the high road (vents) for a faster return route.

Pro Tips

Don’t try to fight every rat in the sewer. The mission is on a timer, and the evidence degrades over time. Prioritize movement and use your gadgets to distract enemies rather than engaging in combat.

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Frequently Asked Questions (FAQs)

Q1: What happens if the evidence gets too wet in the mission?

A: If the satchel stays submerged for too long, the mission fails immediately, and you must restart from the last checkpoint.

Q2: Is there a specific gadget needed for the Damp Evidence mission?

A: Yes, you are required to have the Grappling Hook unlocked to traverse the sewer pipes without touching the water.



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