reporter: the 37 year old female victim was almost raped. he had her pianist than people give them and she was fighting. the cameras did not pick up which way he went. cars pass by and never even stop to help the lady. i did not even realize it was happening because bad kids inside that i was taking care of. reporter: a san jose university student is behind bars tonight use of sneaking into dorm rooms and hoping at least four women. he is a junior at the school book lived off campus. he had no prior arrest with the police department police said they were able to quickly arrest him with the help of surveillance video. we were able to do a lot of police work very quickly everything from our officers checking the surveillance camera as soon as the call came in the continue to cover the footage and interviews of witnesses and put together what we already knew and then broke the case. he was going door to door checking for unlocked the on rooms and students say is, to le