TV personality Louis Theroux has revealed he was stalked by Scientologists while making a documentary about the controversial church.
The journalist, whose feature-length My Scientology Movie screens at New York's Tribeca film festival next week, said he was filmed covertly, repeatedly had the police called on him and received "a blizzard of legal letters" from lawyers.
He believes he was tailed by private investigators and that someone in Clearwater, Florida (the town at the heart of Scientology) attempted to hack his emails.
In an exclusive clip released to Entertainment Weekly, church official Catherine Fraser is seen ordering Theroux to move away from street beside a base in Hemet, California, while a security guard silently films the BBC reporter on a camcorder.
"The road's closed, you're trespassing and you need to leave," says an angry Ms Fraser, after describing him to someone on her mobile phone.