Case of the Icy Igloo Inn

Mary-Kate Olsen writes for young adult readers, with titles like the "Two of a Kind" series and "American Summer Collection." She also explores spooky stories in "Dare to Scare" and other works such as "Getting There.

Ashley Olsen writes engaging stories, from the spooky Dare to Scare to the heartwarming American Summer Collection. She is also known for her work in the Two of a Kind series and other collections like Cool Collection.