A Pennsylvania woman heading to work on Oct. 2 noticed something amiss about her neighbor's home.
Ann Caplan told CBS Pittsburgh (video below) that she approached the house of Beth Gresock after she saw her waving a piece of toilet paper out of her bathroom window.
Gresock was trying to attract attention, as an unknown person was inside her home.
"I was just hoping that someone would see it," Gresock said.
Gresock was awakened that morning when she heard someone moving around downstairs in her Ross Township house.
"To really have someone you hear downstairs in your house, that you do not know, is frightening," Gresock said. "It's frightening."
She went into the bathroom on the second floor, locked the door, and wrote a message on the window with lipstick. "Call Police. 911 - HELP," the message read. Gresock then waved toilet paper out the window to attract attention to the message.
The intruder eventually came upstairs and tried to open the bathroom door.
"After going in the bathroom and shutting the door and hearing them come up the stairs and turning the door, trying to get in when you're in the bathroom locked, that's even more scary," Gresock said.
She estimated that she spent about two hours in the bathroom. She was quiet, stay calmed and prayed throughout the ordeal.
It wasn't until Caplan was on her way to work that Gresock's attention-grabbing tactic succeeded. Caplan was backing out of her driveway when she saw the commotion across the street.
"I saw white -- the toilet paper flapping from the window," Caplan said. "I just happened to see something [and thought] 'why is that there, why is toilet paper there?' ... I got out of the car, looked up, saw her, said, 'Beth, are you OK?' She said, 'No.'
"She whispered -- she didn't want to draw attention -- and said, 'Call 911.'"
The suspect, 27-year-old Brady Kellner, was found asleep on the couch by police. He reportedly had been drinking and entered Gresock's home accidentally.
Gresock said she does not know Kellner, who has been charged with criminal trespassing.