BILLINGS - Imagine this, you're home on a Friday afternoon and someone knocks on your door. When you open, it a stranger is standing there and asks to see your kids.

Mike Craighill of Billings said this happened to him. He said the stranger went on to explain that he was a foreign exchange student studying kids. "There was no chance he was getting in the house," Craighill said. Craighill started to close the door, but the man had one more question. "He asked if I could help him with his map," Craighill said.

Being a good guy, mike decided to help because he thought the stranger might be having trouble with the local language, but that wasn't the case. "He had a handwritten map that had a bunch of houses on it," Craighill said. "He asked me what houses had children and I said, 'not a chance.'" Mike was talking to his sister later that week and found that one of her friends had a similar story.

Elizabeth Krivitz was on her way to work one day when she received a strange phone call. The man on the other end wanted to talk to her about her kids. We called the number back and reached an insurance agent who said the company is offering free DNA sample kits to parents in the area. Krivitz said the way he went about it was a bit disturbing.

"Nothing felt good about the whole situation," she said. "My stomach started turning." Sergeant Kevin Iffland with the Billings Police Department said that feeling should prompt you to call the police.

"If you get that gut feeling that, hey, this just doesn't sound right that's why we're here," he said. Sergeant Iffland confirm that there was an insurance company in town going door to door and that these cases could be related to that.

Whether the threat was real or not, Krivitz said the experience completely changed they way she thinks about parenting. "My son, who before it was cute if he answered the phone, now he's not allowed to answer the phone at all. At all. No matter what," She said.

Though the phone call has been explained, we're still not certain that the man who knocked on Craighill's door was with that agency. Sergeant Iffland said if something feels even the slightest but wrong to you, try to get as many details as you can about the people and vehicles involved, then don't hesitate to call the police.