It was 4am on a cool autumn morning in Tin Shui Wai. Yiu Fung House on Tin Yiu Estate was quiet, except for occasional voices and laughter drifting up from a nearby basketball court. But that silence was broken by a sharp scream and a loud thud as a dark figure plunged to the ground.
'Someone jumped to their death again,' shouted a voice from the basketball court.
The victim was a 12-year-old girl. Her hands and feet were bound with nylon.
Another witness, a woman who peered through her window, saw a second figure fall three or four minutes later. It was a nine-year-old boy. His hands were also bound.
A minute later, a third body fell. This time it was a woman, her body falling close to the spot where her children's bodies had landed.
Hongkongers were shocked by the horrific murder-suicide of Mak Fuk-tai, 36, her daughter, Chan Po-yee, and son, Chan Tung-man, early last Sunday morning.
But behind the gruesome tale of a mainland migrant who moved to Hong Kong to join her husband