The package as a whole is very well put-together, and is very much worth playing through. Her Interactive has a very rare thing on its hands: a long-running series that ages well, doesn't get stale and keeps up the high level of polish. For that alone, the game is worth a look. The characters are all memorable, and the intrigue will keep you hooked for the whole game.
Nancy Drew: The Creature of Kapu Cave may not be the strongest title in the series, but is head-and-shoulders above a lot that's out there, and worth the download.