On the 5th of October, 2021, Matthew Boorman arrived home after a long day at work. He had no idea what was waiting for him.

As he stepped out of his car, his neighbour of 12 years, Can Arslan, suddenly lunged at him. Can stabbed Matthew repeatedly — brutally, and without mercy.

Then, with Matthew dying on the ground, Can sat down… lit a cigarette… and calmly walked away. But he wasn’t finished. Moments later, he headed straight for the next house.

How many more would fall victim to his rampage?
Could anyone stop him in time?
And what drove Can Arslan to turn a quiet suburban street into a scene of horror?

This is the story of a man fuelled by rage, delusion, and revenge — and the system that saw the warning signs but failed to stop him.