The interactive whodunit doesn’t get any harder-boiled than in Dangerous Curves, a rare and effective follow-up to the style of detective interactive fiction seen in Stu Galley’s The Witness. A classic cast of characters and effective geography, with helpful compass direction information provided in the status line, make this piece more approachable than some others of similar depth and complexity. A Z-Machine interpreter (such as Windows Frotz 2000 or Zoom for Mac) is needed to run Dangerous Curves.