My dad was diagnosed with early stage of dementia in March 2017. He has ways accused people to have stolen his things and he'd find them . Lately and increasingly, he has been thinking the gentleman above his house has been entering his property stealing his family pictures, bank statements etc. 2 years ago he bought servaral padlocks with the fear of break in by the same gentleman. He has called the police so many times in the last 2 years that they no longer go to the house . When he finds he's things he now says the guy has broken into the house and put back the things locking the padlocks back. He's even threatened to take the law into his hand and deal with the guy. Lately he has now suspecting everyone including close friends of bewitching him that is the reason he's constantly ill. He's gotten to even telling these people and everyone who knows them. I really do not know how to handle this. He lives alone in Leeds and I live in Grays. So most of my contact with him is over the phone. please help.