As an expert safecracker, you are hired by the wealthy family of a recently deceased to search his mansion for his last will and testament. Duncan W. Adams was an avid safe collector and an 'eccentric,' to say the least. Adams has hidden the deed to his vast fortunes in one of 35 safes.
Open the Steam client, login and locate the Games tab on the top menu. Click this and then select “Activate a Product on Steam…”
Enter your unique code that's displayed on the 'Orders' page of CDKeys.com and follow the prompts to activate.
Your game is now viewable in the “Library” tab and is available to download/install when you’re ready. You can find additional support for the Steam client here: https://help.steampowered.com/en/wizard/HelpWithSteam