Mary and John seem like the typical North American grandparents. Mary loves to bake apple crisp for her grandkids, while John can often be found widdling away in his workshop/garage. After retiring as an accountant, John followed his creative passion and has turned their living space into a photo studio to bring in some extra money. Mary was a sciencetist who retired as well, but secretly still has kept in touch with her love for chemicals... in a more unorthodox way. What secrets lie beneath? #SparkdGoldenAge #SparkdChallenges