bhoot (ghost house)

Bhoot is about a married couple Vishal and Swati who rent an aprtment in a high rise building. Vishal comes to know that a lady named Manjeet had commited suicide from the same flat. Swati is unaware about this. Swati experiences some weird instances. Vishal is worried about Swati's behaviour. Meanwhile the watchman of the building is murdered. Is the flat really haunted or is Swati mentally ill?