It's believed one in five women, and one in 12 men - will be stalked in their lifetime. Yet stalking is a crime rarely reported to the police.
This week singer Lily Allen spoke of her experiences after a stalker broke into her home and threatened to kill her. She says the police did little to help.
Now, as we approach the end of Stalking Awarness Week, a victim from Brighton, who was stalked for more than four years - has come forward and told us her story.
Andy Dickenson reports.