The thief's key in "Dragon Quest 3: HD-2D Remastered" is an important prop with great effect in the game. If you want to get the thief's key, you can go to Najim Tower and go through the underground waterway. Najim Tower, take the stairs on the upper right to go up to the 2nd floor.
How to get the Thief’s Key in Dragon Quest 3 Remake
Najim Tower, go through the underground waterway to Najim Tower, take the stairs in the upper right corner to the 2nd floor, then take the stairs in the lower left corner to go to the 3rd floor, then take the stairs in the lower left corner of the map to go to the 4th floor , talk to the old man and get the key to the important item thief.
