Of course this has to be serious and with solid proof and a judge probably still won't allow unless its more life threatening, If they do not have a lease, then move forward by giving them a 30 days notice to quit ( a full month term) as you are not renewing because you have that relative that is going to move in. 

I threatened to walk away from the contract and they didn't want it to go back onto the market, so they lowered the price by 10,000.

Once I sold the collateral at auction to take it over he continued to threaten and intimidate the tenants to pay him rent.

Threatened me saying he has really good lawyers, i wont win for eviction if i try. 

In doing so I have been cursed at, referred to as a slumlord, physically threatened and assaulted.

I was willing to pay him in a few days but he started threatening to put a lien on the house until I paid him.

So when someone threatens to sue or stops paying rent and needs to be evicted...I just take a deep breath and know I'm going to win.

IF you walk in there angry and demanding and threatening to sue somebody this will not end well for you

I like the idea of using a FOR RENT sign outside to deter the person who is threatening the current tenants for coming onto the property.We prefer month-to-month rental agreements over long-term leases.

HelloMy ex-landlord is threatening to sue me for water damage I caused due to watering a flower bed in the garden.