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Shortly before 3pm on Saturday, January 14, 2012, the doorbell rang at the Howe Family home.

49-year-old Chun Num answered it. Standing on his doorstep was a teenage boy whom Chun Num didn't recognise.

It seemed reasonable to assume he had come to see one of Chun Nums two children.

When asked who he was looking for, the boy explained that he wanted to speak to Vinci.

Vinci was Chun Num's 15-year-old daughter. Chun Num called for Vinci, who appeared at the top of their staircase.

She said she would speak with the boy. Chun Num retreated to the kitchen to prepare dinner, leaving Vinci and her male guest alone.

Moments later, Chun Num heard Vinci cry out in pain and he rushed back into the foyer.

He was immediately struck in the face with a knife, leaving a bleeding gash across his right cheek.

Chun Num raised his hands for protection, whilst simultaneously trying to flight off his assailant.

The commotion alerted Chun Num's 12-year-old son, who rushed in to find his father grappling with a teenage boy holding a knife.

The teen managed to stab Chun Num several more times in the face, head and arms before fleeing out the front door.

Lying nearby at the base of the stairs was Vinci. Her face was covered in blood.

Vinci, how lived in the Dutch city of Arnhem?

She was a popular secondary school student with an active social life and many friends.

In her spare time, Vinci visited herself with a variety of hobbies, including dancing for a street crew, learning piano and playing chess.

Vinci had adopted the western-named Joyce, but her family still referred to her by her Chinese heritage name Vinci.

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