After the elevators at a New York City skyscraper begin inexplicably malfunctioning, putting its passengers at risk, mechanic Mark Newman (James Marshall) and reporter Jennifer Evans (Naomi Watts) begin separate investigations. Newman gets resistance from superiors at his company, which manufactured the elevator, while additional elevator incidents cause several gruesome deaths. The police get involved and suspect that terrorists are responsible, but a far stranger explanation looms.
A woman accuses a man of rape to try and get out of being thrown out. The rape never happens or anything close, she's just trying to get the security guards to put her down.
Yes but not a major character. You see a woman (presumably the mother) holding desperately to her child's hand in a scene where the elevator floor opens up. Both do not make it.
Yes, at the very beginning of the film, two security guards are watching two women strip and grind on a man. Breasts are seen but underwear is kept on.
Also, skip 34:12 through 34:25
TL/DR
A blind man’s golden retriever service dog is shown being pulled down into an elevator shaft and you can hear him whimper.
The dog’s body is graphically shown later.