Mystery of New western town: Escape puzzle games

The story is about a mystery of New western town, where you have to solve a murder in the Wild West. The main hero of the game received a letter from a friend. The latter told him that he found a gold mine. The gold hunter was killed by someone else. Help the character catch the murderer. It's a good idea to look at the streets and buildings with the hero. It involves finding evidence, talking to the local citizens, and solving logic tasks.