AE Mysteries: On Thin Ice Locker Code Guide and Chapter 3 Walkthrough

Stuck on the On Thin Ice locker puzzle in Chapter 3? Discover the exact 5-digit code, the visitor rule logic, and step-by-step station tips.

Few point-and-click puzzle sequences stump players quite like the police station holding cell in Haiku Games' acclaimed detective adventure. If you are struggling to crack the on thin ice locker in Chapter 3, you are certainly not alone. Finding the right digit sequence requires dissecting an obscure visitor policy placard rather than just searching the room for hidden numbers. This complete guide breaks down how to unlock the on thin ice locker, bypass tricky environmental barriers, and clear the room so Detective Kate Gray can get the answers she needs.

Whether you missed the item cleaning step or miscalculated the room’s head count, this walkthrough covers every mechanic needed to progress through the blizzard lockdown.

Chapter 3 Context: The Station Lockdown and Holding Area

Chapter 3 plunges Kate Gray and Detective Murphy into a tense crisis. After returning from Echo Bay, Kate finds the police department crippled by ransomware and physically cut off by an unrelenting blizzard. Before you ever interact with the holding cell lockers, you have to uncover the rogue operator inside the department.

Kate tracks the digital breach down to Dan’s computer desk. Awakening Dan, repairing his water-cooling system, and arranging his data clusters reveals that Dan has been compromised by an extortion scheme. To interrogate him without interference, Kate must clear three colleagues—Jacob, Murphy, and Keiko—out of the immediate holding area.

Navigating this sequence requires gathering several specific components scattered across the central station floor and adjacent holding rooms.

Item Name	Initial Location	Primary Purpose in Chapter 3
Hand Sanitizer	Station corridor desk	Cleans grime obscuring the holding locker keypad
Loose Wire	Behind the fallen rules placard	Hooks Jacob’s keyring and retrieves Dan's mug
Holding Cell Keys	Hanging from Officer Jacob's belt	Unlocks the secure gate leading to the locker bank
Police Tape	Left locker (Key access)	Handed to Murphy to send him on patrol
Dan's Belongings	Right locker (5-digit code)	Given to Keiko to dismiss her back to her desk
Arrest Papers	Desk counter near cell entry	Given to Jacob to send him out of the precinct

Understanding the layout prevents back-and-forth backtracking. You cannot crack the keypad until you enter the inner corridor, and you cannot clear the staff until both lockers are emptied.

Solving the On Thin Ice Locker Puzzle Step-by-Step

Once you use the hooked wire to retrieve Jacob’s keyring and open the security grille, you are confronted by a pair of metal storage units. The locker on the left opens smoothly with one of the brass keys, rewarding you with a roll of police barrier tape. However, the right unit features an electronic numeric keypad caked in dirt.

Step 1: Cleaning the Electronic Keypad

Before the keypad accepts inputs, Kate must clear the smudge marks covering the digital screen. Grab the bottle of hand sanitizer from the station hallway counter and apply it directly to the interface. This reveals five distinct entry slots awaiting a 5-digit code.

Step 2: Interpreting the Visitor Placard

Nearby, knocking down the framed visitor regulations sign reveals both the wire tool and the clue sheet needed for the on thin ice locker combination.

Many players get stuck here because they try counting the active officers and inmates currently standing in the precinct. Player experience and community reports frequently highlight this trap: the puzzle does not care about Kate, Jacob, Murphy, or Dan. Instead, the clue explicitly directs you to analyze a standardized regulatory scenario:

Regulation Rule: Only one visitor is permitted per prisoner at any given time.
The Population Base: Exactly two individuals exist in this scenario (1 prisoner + 1 visitor).

The framed notice features specific keywords highlighted in bold, capitalized lettering: HANDS, NO ITEMS, SHIRTS, SHOES, and MOUTHS. To derive the combination for the on thin ice locker, calculate the physical attributes present for those two hypothetical individuals.

Code Position	Target Keyword	Attributes per Person	Two-Person Total (Code Digit)
1st Digit	HANDS	2 hands per person	$2 \times 2 =$ 4
2nd Digit	NO ITEMS	Zero permitted personal effects	$0 \times 2 =$ 0
3rd Digit	SHIRTS	1 regulation shirt per person	$1 \times 2 =$ 2
4th Digit	SHOES	2 shoes per person	$2 \times 2 =$ 4
5th Digit	MOUTHS	1 mouth per person	$1 \times 2 =$ 2

Step 3: Entering the Master Code

Punch 4 - 0 - 2 - 4 - 2 into the sanitized digital keypad. The lock will chime green and pop open. Inside rests the box containing Dan’s personal effects, a crucial inventory piece required to dismantle the crowd lingering in the holding area.

Managing the Holding Area: Clearing the Precinct Officers

Unlocking the on thin ice locker is only half the battle. Kate cannot interrogate Dan openly while his fellow officers remain within earshot. To create the privacy needed for a confession, you must assign plausible tasks to each individual using items found in and around the lockers.

[Keypad Locker (40242)] ──> Dan's Belongings ──> Hand to Keiko  ──> Keiko Exits
[Standard Locker (Key)] ──> Police Tape      ──> Hand to Murphy ──> Murphy Exits
[Front Desk Counter]    ──> Arrest Papers    ──> Hand to Jacob  ──> Jacob Exits

Distributing these items in the proper order clears the room completely:

Dismissing Keiko: Present Dan's personal items to Officer Keiko. Realizing she must inventory and file the suspect's gear, she leaves the cell area to return to the processing desk.
Reassigning Murphy: Hand the roll of police tape obtained from the left locker to Murphy. He departs to cordon off damaged corridors affected by the blizzard.
Dispatching Jacob: Pick up the processed arrest warrant documents sitting on the intake counter and hand them to Jacob. Jacob exits the holding area to log the transfer paperwork.

With the precinct floor finally deserted, Kate can approach Dan’s individual cell unobserved. Use the flexible wire once again to hook Dan's dropped eyeglasses and an empty tin mug from across the partition. Fill the mug with cold water leaking from the overhead pipe, splash it over Dan to revive him from his stupor, and return his glasses to initiate dialogue.

Technical Puzzles Leading Up to the Locker Bank

If you are revisiting this chapter or playing through fresh, remember that accessing the corridor housing the on thin ice locker requires solving two complex puzzle sequences on Dan's workstation.

Dan's Workstation PIN Code

Dan secures his terminal with a 4-digit security code hinted at by his digital photo frame. After using the microfiber cloth and remote control to repair the corrupted frame carousel, match the desktop monitor symbols to the corresponding activities in his photo album:

Symbol Shown	Matching Activity in Album	Derived Digit
Red Stopwatch	Escape room finish time	5
Blue Snowflake	Snowboarding milestone photo	3
Orange Fish	Sushi restaurant date photo	9
Green Gear	Robotics competition photo	7

Entering 5397 successfully boots the computer system.

Hard Drive Sector Alignment

Once logged in, Kate must organize Dan’s compromised server data to verify his involvement with the ransomware syndicate. This mini-game functions as a sliding partition puzzle:

Top Row: Align all yellow security sectors.
Middle Row: Group all neutral white data blocks.
Bottom Row: Consolidate all corrupted green network nodes.

Resolving this storage grid unlocks the surveillance logs that officially implicate Dan, triggering the lockdown protocol that forces you toward the holding cells.

Troubleshooting Common Puzzle Mistakes

Adventure Escape games often hide solutions in plain sight. If your code fails to trigger the solenoid on the on thin ice locker, check whether any of these subtle oversight traps are blocking your progress:

Problem Encountered	Underlying Cause	Solution
Keypad unresponsive	Grime is still covering the buttons	Combine hand sanitizer with the locker front before typing.
Code rejected (Attempting 80484)	Counted the officers in the room	Base calculations purely on the standard: 1 prisoner + 1 visitor.
Keys out of reach	Attempting to click Jacob directly	Dislodge the rules frame first to obtain the wire tool.
Dan won't speak	Dan is disoriented and missing vision	Revive him with dripping water; return glasses via inventory.
Closet remains locked	Missing the hidden compartment key	Inspect Dan’s leather belt inside inventory to extract the key.

Players seeking official patch notes, game updates, or additional mystery titles in the Kate Gray universe can explore developer releases directly on the Haiku Games official portal, which catalogs level updates and mobile releases across all platforms.

Key Takeaways for Adventure Escape Mysteries Fans

The holding cell sequence in On Thin Ice exemplifies the classic environmental narrative puzzles Haiku Games is known for. Solving the on thin ice locker demands careful reading comprehension rather than brute force guesswork.

Read placards as logic puzzles: Whenever an Adventure Escape title highlights words in all caps, treat those words as algebraic variables rather than simple flavor text.
Examine inventory items internally: Dan’s belt holds a concealed compartment that must be tapped inside your equipment bag to produce the closet key. Always tap items to see if they open.
Interact with environmental hazards: Dripping pipes, smudged screens, and loose wires are always interactive tools designed to solve multi-stage room puzzles.

By entering 40242, you can clear the locker, disperse the monitoring officers, uncover Dan's tragic motivation regarding his daughter, and retrieve the specialized communication hardware needed for Chapter 4.

Frequently Asked Questions

What is the exact 5-digit code for the on thin ice locker?

The correct combination is 40242. This is derived from the visitor rule placard hanging on the holding cell wall: 4 hands, 0 items, 2 shirts, 4 shoes, and 2 mouths for a hypothetical group consisting of one prisoner and one visitor.

Why won't the on thin ice locker keypad let me enter numbers?

The locker keypad starts covered in station grime. You must collect the bottle of hand sanitizer from the hallway counter and use it on the keypad to clean the surface before the numbers become clickable.

What items are inside the two holding room lockers?

The left locker, which opens with the brass keyring, contains a roll of police barrier tape. The right on thin ice locker, opened with the code 40242, stores Dan’s impounded belongings.

How do I get Jacob's keys to reach the lockers in the first place?

Knock down the framed prison regulations placard near the door to knock loose a piece of wire. Use the wire in your inventory to reach through the security grille and hook the keyring directly from Officer Jacob’s utility belt.