While a Taupō family slept, an arsonist set their house on fire.
Their house was one of five properties intentionally set alight in a string of lakeside arsons at the weekend.
Luckily, the family awoke and escaped their burning home without harm, police said.
But not all houses remained standing - two were completely destroyed.
Detective Sergeant Andy Livingstone said police know incidents like this are extremely distressing for those involved and in the wider community.