I'm playing this at the moment and it's very good. It's a mystery/adventure game with some puzzles where you investigate a murder mystery involving the Knights Templar (or something). If that sounds a bit like The Da Vinci Code you'd be right :D
The art style in the game is excellent. Some dialogue would have been nice but I love the way the facial expressions are drawn. Some of the one liners are good too.

Will there ever be other Broken Sword games remade for DS do you think?

---