1 DID HE KILL THEM?

Amy is a 37-year-old woman who runs a fashion store in Massachusetts. One fine morning when she opened her store, there was a strange smell there on her store. When she followed the smell, it led her down to the basement of the store. There was nothing there except for some cartoon boxes and three extra mannequins she ignored it and when she was going up to the store, she saw a chunk of flesh on the floor. She got scared so she called the cops.

When Harry and Gia, the two investigating officers for this case came and started to investigate, they found a strange thing. There was no blood on the flesh that Amy found. While they were investigating they found some dead bodies cut into pieces inside the three extra mannequins.

The dead bodies were cut into pieces, the blood was sucked out from the body, their head was missing, there was no blood on the dead body, there was no nail. They came to know that the victims died a night before they bodied were found. After 24 hours when the DNA result of the dead bodies came, they were shocked cause they had the same DNA, which meant they were siblings. Among the dead bodies, there were 2 men and 1 female.

After a day they started to check every missing report but they didn't found any three siblings missing together in Massachusetts. They thought that the victims weren't from Massachusetts, after few hours they finally found a missing report of three siblings, Serina, Hasmet, and Burak, who were from Istanbul.

After knowing who are the victims, the officers started to track their past records like where were they in the past days and all. They also found that a strange guy was following them every day.

They called the victim's stepbrother, Ahmet, who filed the missing complaint. They told him that he should come to Massachusetts for investigation and to claim the dead bodies. When they saw him, they were shocked as he was the same strange guy who was following the victims before were murdered.

But what was he doing there ?

Did he kill them?