Elena - At the Last Moment

Elena, Tim and Niklas are taking part in the preliminary selection tournament for the European Junior Championships. However, something fishy appears to be going on. The horse that is leading the rankings is injected by a masked person and disqualified, and other riders who move up the rankings (including Niklas) suddenly get vomiting with diarrhoea and can no longer participat. Elena, together with Tim, try to get to the bottom of the matter.