For decades, the Government has locked up teenage offenders, even when they are on remand. It now knows there is nothing worse for their rehabilitation. So this year it is buying up homes all over the country to house them outside prison gates.

In a quiet suburb of Rotorua, there is a powder-blue house which looks like any other property on the street.

The five-bedroom home is a warm, inviting place. The smell of fresh baking is coming from the kitchen. There is a big lawn and a basketball court, and trees on the front lawn are shedding autumn leaves.