Buy Sherlock Holmes Chapter One Season Pass now! You will receive the key for the DLC by Frogwares via eMail within the stated delivery time. Get a bunch of great additional contents for Sherlock Holmes Chapter One with the DLCs in the Season Pass. Download Sherlock Holmes Chapter One Season Pass for free via the Steam network. Steam can be found here. The original game (not included in this offer) is required to use, respectively, play the contents of the DLC. This is an EU key that can only be used / activated within Europe.