Watch full Strange Hill High Season 1 Episode 3 full HD online. Cartoon video Strange Hill High Episode 3 online for free in HD. The Lost and Found Boy. A man asks Mitchell if he has seen his son, but Mitchell says he hasn't. But before he can ask what the man's son is called, the man has mysteriously disappeared. Ms Grimshaw sees Mitchell is late but doesn't believe he was helping a man outside and is sent to Abercrombie's office. When things start to mysteriously disappear around the school, everyone except Becky and Templeton believe that it is Mitchell stealing everything. But when they find a boy living in the lost and found, they discover the truth about all the mysterious goings on.