Surraiya will kick Aliya out of house (based on Surraiya's reaction in precap and her people who defend this house's enemies are not welcome in this house). Zain will try to stop Surraiya, Surraiya won't heed and Zain will decide to leave with Aliya even if he has separate views to her regarding Usmaan's accident.
Rehan will use his watch (similar to Zubbu's) to prove that neither the video footage nor the watch are enough evidence to prove Zubair did anything as the hotel has many people using the elevator. The footage from the inside of the elevator will be used (Rehan will recover this) because we for a fact know there is a camera inside the elevator. Also any footage or evidence near the elevator maintenance area will be searched for as well. Rehan will prove Zubair's innocence and deem the elevator accident a technical fault and the employees will get charged or fired.
There is also an evident tension between Aliya and Rehaan though I'm not sure what to make of it 😛