Agent A: A Puzzle in Disguise: Walkthrough Guide

51. Leave that room and place the ruby in the yak’s eye socket. Then take the pianola roll from its mouth.


52. Go up to the piano room and place the pianola roll in the slot above the keys. You now have to play three tunes by following what the piano plays first. If you fail any, though, you’ll have to start from the first tune. This was the trickiest puzzle in the game for me. But I made a video of it that you can watch below, or look at the screenshots with the numbered keys. When you get all three tubes correct, a lever will appear. Pull it to reveal a hidden area behind the bookcase.




53. Check out what was behind the bookshelf. Take the hacker device and look through the file.





54. Use the hacker device with the fingerprint scanner. This next puzzle is a bit like a slot machine, where you have to stop each piece at the glowing number. If you mess up, you’ll have to start again. I’m not sure if every game is the same, but my numbers were 31185. Take the explosives and press the big red button to shut off the electricity in the pool.



55. You’ll now automatically be by the pool. Place the explosives on the locked trap door. Add the cell phone. It reads the numbers 921981.



56. Go back to the study upstairs. Zoom in on the phone and press the speaker button. Then enter 921981. There will be a large explosion and you’ll be back at the pool. You can now go through the secret door to watch the ending (which is sadly a cliffhanger).




Click here to continue to Chapter 3, Ruby’s Trap.

Scroll down if you want to see the hidden bonus.

Hidden Bonus Easter Egg:

Go to the study and enter *69 into the landline phone. The voice recorder will read off a URL for you. Write it down and you get



Enter that address into a browser and you get the word “shoephone.” 😉


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71 thoughts on “Agent A: A Puzzle in Disguise: Walkthrough Guide

    1. Michel

      K i’ve got the cell & hack device.
      The pool is still electrified.
      What is 1771?
      Does the sunk ship and the lines have to do with the puzzle over the fireplace? Or is the table upstairs with its weird shape and comment? Or is the two square shape diagram on the desk?

  1. linda

    Thank You! I’m always the last to play – BTW, the lightbulb is no longer in the toolbox in the garage. Just FYI.

  2. Alex

    Same here, there wasn’t a lightbulb inside the toolbox!! All the items were in the toolbox, except for the lightbulb. Any ideas or tips?!

    I kept playing for a while, until I got stuck; so I tried Google, and a few other walkthroughs. Then I found others with the same issue, who’d left the “missing lightbulb” comments here.

    I couldn’t find any answers about ‘Agent A’ issues, like this pesky missing lightbulb. …Has anyone with the same problem found a solution? (Ideally one that doesn’t involve resetting my game, and progress.)

    It’s my first time playing ‘Agent A’, and it is a brilliant game; the perfect mix of adventure and puzzle genres.

  3. MoJo

    To all the people who cannot find the lightbulb in the game. You dont need to find the lightbulb now.

    Just go to the main entrance and smash the flickering light bulb with your hammer.


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