Nancy Drew: Alibi in Ashes is available at the Macgamestore (http://www.macgamestore.com). It requires Mac OS X 10.6 or higher and costs US$19.99.
Here’s how the game is described: “A local contest turns into an arson scene and now deceit smolders among the charred ruins of the River Heights Town Hall. Police have several suspects, but well-placed incriminating evidence and poisonous local gossip compelled authorities to make only one arrest: Nancy Drew. Can you, as the teenage detective and her closest friends, catch the real arsonist and extinguish the accusations among the embers?”