Starting your art collection? Start small. At OCAD's sixth annual Whodunit? Mystery Art Sale on Saturday, you'll have over 800 pieces to choose from—all 5½" x 7½", all $75.00. Buy your favourite, then turn it over to reveal the name of artist. Depending on your luck and sleuthing skill, you could end up with a big-name bargain: in addition to the usual Canadian artists and OCAD alumni, faculty and students, this year's special contributors include architect Will Alsop, artist Barbara Astman and author Margaret Atwood. And if you're not so lucky, well, you'll have a very expensive postcard.

It's all first come, first serve, so go as early as your hangover will permit. The sale starts at 9 a.m. this Saturday, November 24, and runs until 4 p.m. All proceeds go to OCAD.