Two-minute mysteries

http://www.sd22.bc.ca/silverstar/writing/mysteries/mysteries.html an archive of the sort of thing you're looking for,

http://www.qesn.meq.gouv.qc.ca/schools/olp/2mmclub/solve.htm "The 2-minute mystery writing club" I didn't browse through the ones listed; they're written by school children, but that doesn't really mean anything about the quality...

http://www.qesn.meq.gouv.qc.ca/schools/olp/2mmsolve/current.htm Same organization as the above, but these seem to be from anybody who wants to submit.

http://www.transformationalthinking.com/html/two_minute_mysteries.html Don't know what the group behind this page is about, but give it a try.

E-Mail from Barbara Bailey