The Sinking City is an upcoming third-person detective game from developer Frogwares, which is perhaps best known for its Sherlock Holmes series.
Frogware's title is set in the 1920s in America, and places great emphasis on detective work. Furthermore, it also promises a unique "open investigation system", which will allow players to sleuth without any quest markers or other similar mechanics. While the game isn't entirely focused on combat, there are apparently still some monsters that players will have to defend themselves against.
You can check out the disturbing cinematic trailer below:
That said, it is important to note that The Sinking City does not have a release date as of yet.