A source who used to work for Brittany Murphy says Brittany is convinced "a high-powered Hollywood player" is stalking her. Back in April, her then-boyfriend Simon Monjack disappeared for 10 days and Brittany claimed he had been kidnapped by agents of her stalker. However, the kidnapping exactly coincides with the dates that Monjack, a British citizen, was reportedly jailed by U.S. immigration for overstaying his visa.

"When he came back, he had head injuries," says the former insider. "He was ...