Based on the famous fictional character, this is an adventure game in which you have to solve two sets of clues.
The first are the normal adventure game clues which must be solved to get to the right place, with the right thing, etc. Next you have to find a murderer, the classic Sherlock Holmes stuff.
This is the result of 15 months work by a team of programmers, led by the author of The Hobbit. Certain locations come with a picture of the place drawn to the screen, as well as the written description. One extra feature is a digital clock. This shows the passing of time in the plot, and can be utilised by the command "wait until..."
One anomaly is that Sherlock must pay a cabby or receive verbal abuse, but he is excused from train fares! However long the programming took, there are mistakes. The author couldn't make his mind up whether or not Daphne should begin with an upper or lowercase letter, and there are illogical responses to some requests.