now, to the dramatic kidnap rescue caught on camera in alabama. body camera footage showing officers freeing a woman who had been taken captive, allegedly beaten inside a white van. authorities moving in after a dangerous chase. here s abc s steve osunsami with the details and the chilling scene they discovered inside that van. reporter: authorities north of birmingham tonight are sharing this police body camera video, showing the end of a wild police chase where they arrest an accused kidnapper and free his alleged victim. inside this beat-up white van is the woman who was held at knifepoint on sunday. put your hands up! hands up! reporter: she was bleeding and screaming for help. police negotiated for more than half an hour and were able to get her out first. still inside is the man police are identifying as sean sanders, who was not giving up easily and had to be tased. we were just terrified, because we didn t know, you know, whether he had a gun, if he was going to be sh