Idea #4 - No Title Yet
A woman goes on a run/jog and fails to return home. She could have twisted an ankle leading to her run or jog coming to a painful end. When she accepts a ride, the driver turns out to be a sex offender or serial killer. Gender of the driver could also be a female.
She could also see something she wasn't suppose to see during her run or jog, get away from the man or people she wasn't suppose to see only to leave behind her ID. Days pass without incident until one day, she finds herself waking up in someone elses bed unable to move.