Few things are out of date on this list, so I'm providing some info to get them up to date:
The Testament of Sherlock Holmes, Sherlock Holmes versus Jack the Ripper, and Sherlock Holmes: The Awakening - Remastered have all had their third-party DRM removed. Full PID scan for each of the games below:
06:30:02 | C:\Steam\SteamApps\common\The Testament of Sherlock Holmes\game.exe | Steam Api | Possible CD/DVD-Key or Serial Check
06:30:03 | C:\Steam\SteamApps\common\The Testament of Sherlock Holmes\steam_api.dll | Steam Client API Module v01.23.45.93
06:31:08 | E:\Steam\steamapps\common\sherlock holmes the awakened - remastered\game.exe | Steam Detected | Possible CD/DVD-Key or Serial Check
06:31:31 | E:\Steam\steamapps\common\Sherlock Holmes versus Jack the Ripper\game.exe | Steam Detected | Possible CD/DVD-Key or Serial Check
Risen no longer uses Tages, however it WILL ATTEMPT to install Tages if the user runs the game before removing the Tages installation files. Link: http://steamcommunity.com/app/40300/discussions/0/882962139461536196/ and http://web.archive.org/web/20141205210728/http://forums.steampowered.com/forums/showthread.php?t=2824442
The files in question to remove are:
06:24:24 | E:\Steam\steamapps\common\risen\bin\TagesClient.exe | Tagès Activation Client v. 5.5.3.7
06:24:37 | E:\Steam\steamapps\common\risen\redist\tages\TagesSetup.exe | TagesSetup v. 5.5.5.2
06:24:37 | E:\Steam\steamapps\common\risen\redist\tages\TagesSetup_x64.exe | TagesSetup v. 5.5.5.2