Evil Promotion Much? (1) - S3.E23

Sam, Clover and Alex are given the opprotunity of becoming Super Spies to commmemorate their successful missions! They are greeted by their new trainer, Terrance. They also undergo training with another boy named Dean, who is also training to become a Super Spy. But when Dean goes missing, the girls wonder if it is mere coincidence or if it's more than that. Will the girls be able to find Dean? And where does Terrance fit in to all of this?