Madhouse (1990 film)
Madhouse is a 1990 comedy film starring Kirstie Alley and John Larroquette.
This begins when the mail of Mark and Jessie Bannister is delayed due to forwarding issues, and they find out a cousin, Fred, and his pregnant wife, Bernice, are flying in from New Jersey to visit. The Bannisters receive the letter on the day Fred and Bernice are expected to arrive. Though a little unpleasant, this only lasts five days...until Bernice falls on the way to the airport and is instructed by her doctor not to leave until she delivers six months later.Things progressively get worse as a series of unfortunate events finds Fred gone to find himself, and more and more people moving into the house, destroying it in the process. Ultimately, after fifty days of hell, the couple reclaim their home in a violent act of revenge. ........
Source: Wikipedia
