2 She proceeds to take the elevator to the 7th floor, makes her way from the guest lobby to the service corridor, takes a flight of steps and enters the roof through a door that is mysteriously left open.
BUT: Where is lobby security? Why is the door open?

3 Having got her SMS message, friend Deborah Malik calls Natasha at 1 a.m. Natasha doesn't speak. Malik can hear the exhaust fans of the AC plant in the background.
BUT: The exhaust fans are powerful enough to blow a human away. So how does Natasha keep her balance there?

4 Sitting on the roof, she switches off her cell phone at 1.30 a.m. and drinks whisky from a bottle she is carrying. At about 2.30 a.m. she crawls up to the tower-top and, say police, jumps to her death.
BUT: The cell phone found next to her body is undamaged after a fall from seven floors.