Update: I bought the next Miss Clue game, "Cruise Most Deadly." I really liked it. There was still a lot of to and fro and some rather frustrating moments, mainly involving machinery and directions, but it was long and kept my interest. Objects to pickup were easier to see than in Pemberley, there was lots of exploration and many puzzles, and the story was pretty good. It was much more like a Nancy Drew game.
I am now playing the last installment in the series, "Trials of Salem." It's an interesting tale but there isn't much sleuthing going on. It's more an interactive story with chores thrown in. Lots of chores.