Detective Duck The Prison Walkthrough Solution

Detective Duck is a mystery puzzle–solving Roblox game that was released on January 30, 2026, along with a New Maps + Rewards update.

This update introduces a new mission called “The Prison,” which players can now solve.

In the game, you play as a detective. Your goal is not to fight or survive, but to investigate crime scenes, find clues, and solve mysteries.

Players can complete missions solo or team up with up to 5 players to solve cases together.

In this article, you will find a complete step-by-step walkthrough solution for the Detective Duck The Prison mission, explained clearly to help you progress without confusion.

Detective Duck The Prison Walkthrough Solution

Here, you can see the updated “The Prison” walkthrough, which includes all keys, codes, puzzles, and how to identify the correct suspect.

This guide will help you fully solve the mission and catch the real culprit without confusion.

Step 1: Collect the Grinding Tool (upper Area)

Location: Prison upstairs area​

Actions:

1. Go upstairs from the main prison floor​
2. Look for a cake on a table/shelf​
3. Click the cake – Below it, you’ll find the Grinding Tool

Step 2: Unlock the Poster Room (1st Cell)

Location: Main prison area​

Actions:

1. Use the Grinding Tool to break open a locked door​
2. Access the poster behind the door​
3. Note down the arrow pattern:
   • First: Down
   • Second: Right
   • Third: Down
   • Fourth: Right
   • Fifth: Right
   • Sixth: Down

Step 3: Convert Arrow Pattern to Code (magnifying Glass)

Location: Prison walls (use Magnifying Glass tool)​

Actions:

1. Equip your Magnifying Glass​
2. Look at the prison wall with hidden digits​
3. Match each arrow direction to a digit:
   • Down = 1
   • Right = 8

Code Conversion:

• Down (1)
• Right (8)
• Down (1)
• Right (8)
• Right (8)
• Down (1)

Final Code: 181881

Step 4: Open A3 Cell with Code (2nd Cell)

Location: A3 Access Keypad​

Actions:

1. Locate the A3 Access Keypad in the prison​
2. Enter the code: 181881​
3. The cell door opens​

Result: Cell A3 is now unlocked

Step 5: Collect the Plunger

Location: Upper area, left side​

Actions:

1. Go back upstairs​
2. Look on the left side of the upper level​
3. Collect the Plunger​

Result: You now have the Plunger

Step 6: Use Plunger in Cell (get Keycard)

Location: Cell A3 (the one you just unlocked)​

Actions:

1. Go back to Cell A3​
2. Use the Plunger on the cell toilet/fixture​
3. Collect the Keycard that appears

Step 7: Unlock Cafeteria (keycard Room)

Location: Cafeteria entrance​

Actions:

1. Use the Keycard on the cafeteria access point​
2. Enter the Cafeteria

Step 8: Collect Four Acidic Tomatoes (cafeteria)

Location: Cafeteria (multiple locations)​

Actions:

1. Collect the 1st tomato – First location​
2. Collect the 2nd tomato – Second location​
3. Collect the 3rd tomato – Third location​
4. Collect the 4th tomato – Fourth location in the cafeteria

Step 9: Blend Tomatoes Into Acidic Juice

Location: Cafeteria upper area (right side)​

Actions:

1. Go back upstairs to the right side​
2. Find the Blender​
3. Put all 4 tomatoes into the blender:
   • 2nd tomato
   • 3rd tomato
   • 4th tomato
   • (Keep 1 for reference)​
4. Run the blender​
5. Wait for the blending process to complete​
6. Collect the Acidic Juice when ready

Step 10: Melt Rusted Iron with Acid

Location: Prison area with rusted iron/metal​

Actions:

1. Find the rusted iron barrier/lock​
2. Use the Acidic Juice on the rusted iron​
3. Watch it melt

Step 11: Collect Scissors (cafeteria)

Location: Back of the Cafeteria​

Actions:

1. Go to the back of the Cafeteria​
2. Collect the Scissors

Step 12: Cut All Four Wires (wires Puzzle)

Location: Wire area (after melting iron)​

Actions:

1. Return to the melted area​
2. Cut Wire #1: Green​
3. Cut Wire #2: Blue​
4. Cut Wire #3: Yellow​
5. Cut Wire #4: Red​

Wire Order: Green → Blue → Yellow → Red

Step 13: Collect A3 Key

Location: Opened area (after cutting wires)​

Actions:

1. In the newly opened area, look for the A3 Key​
2. Collect the A3 Key (key to the office/denim room)

Step 14: Open the Office Door

Location: Denim/Office door​

Actions:

1. Use the A3 Key to open the office/denim door​
2. Enter the office

Step 15: Screenshot Keypad Pattern

Location: Inside the office​

Actions:

1. Take a screenshot of the keypad pattern on the wall​
2. Memorize where the GREEN markers are

Step 16: Mark Green Pattern on Keypad

Location: Office keypad​

Actions:

1. Look at your screenshot of the pattern​
2. Mark all positions where GREEN appeared:
   • 1st position: Green ✓
   • 2nd position: Green ✓
   • 3rd position: Green ✓
   • 4th position: Green ✓
   • 5th position: Green ✓
   • (Mark approximately 5 green positions)​
3. Complete the pattern correctly

Step 17: Click “I Forgot My Password”

Location: Office storage/safe area​

Actions:

1. A password prompt appears​
2. Click “I Forgot My Password”​
3. Message says: “Check your Inbox.”

Step 18: Find Your Inbox (password Location)

Location: Inbox room (near office)​

Actions:

1. Locate the Inbox room (in the prison building)​
2. Click on the “New Email”​
3. Read your password from the email​

IMPORTANT: Your password is UNIQUE TO YOUR GAME. Common example: SHGAIS

Step 19: Enter Password & Open Safe

Location: Back in the office at password prompt​

Actions:

1. Return to the office​
2. Enter your unique password from the inbox​
3. Click Submit​
4. The door/safe opens​

Step 20: Identify the Correct Suspect

The prison case file states:​

“20 inmates vanished from the prison. There were no alarms triggered, no guards were attacked. This was an INSIDE JOB.”

Suspect Analysis

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