I have fond memories of Scary Go Round from my (I think) relatively brief but quite intense webcomic-reading days - maybe not that brief, as it looks like it was from at least December '05 to June '06 - and the creator went on to create this follow-up/spin-off series "Bad Machinery". Six kids, detecting. Colourful and sharp, with that quixotic dialogue I remember and love, and unabashed supernatural elements; v.g. (I've also since read the next couple of cases - they are all online.)