JACKSONVILLE , Fl. --- The Jacksonville Sheriffs office is investigating an incident they say took place in the Wal-Mart at Beach Blvd. and Hodges Blvd. They say a woman was walking out of the store on the way to her car. Thats when they believe a man walked up to the woman, put a knife to her back and forced her into her car. They say once inside the car, the man robbed her, then molested her.

The woman tells police she tried fighting off the man and eventually used her elbow to lean on the horn of her car. She says at that point, a man in an SUV pulled up next to them and asked if everything was alright. She says she was able to mouth the words Help to him---but almost immediately the suspect took off up Hodges Blvd.

Police say the man hit about 100 miles per hour on Hodges Boulevard , but lost control when he got to Hodges and Glenn Kernan Blvd. Thats when Brad Barnett says he saw the car smash into a sewer grate, and he went to help the people inside.

I asked the girl, whats going on with this guy---she says, go get himhe just carjacked mekidnapped me, raped me and robbed meso I ran after the guy, says Barnett.

Barnett says he started walking after the man, but he pulled a knife on him. So Barnett went and got a hammer from his truck and chased after the suspect.

He was like, I dont want to go back to jail---and I was like, you shouldnt have raped the chick.

Police eventually caught up with the suspect and arrested him. Barnett says he doesnt look at himself as a hero, he just hopes what goes around comes around.

Im just hoping Ive got some good karma coming my familys wayin case anything bad ever does happenlike I said, Id just like to hope that someone, if they see someone else in trouble whether it be a guy or girl, old or young---they stopand just help someone outyou just never know.

The suspect in this investigation is 50 year old Stephen Wilson. He faces a laundry list of charges including kidnapping, sexual battery and armed robbery. The victim in this investigation is expected to be alright.