Magnum, P.I. - Season 4 Episode 19 : On Face Value 1988

Carol persuades Magnum to do some surveillance work for a case she's working on, but the job leads to a high-speed car chase which ends in near tragedy when Thomas returns gun-fire only for it to accidentally hit another car, causing it to crash and severely injuring the young woman driving it. With the girl, Emily, facing never being able to walk again, Thomas is racked with guilt, and befriends her, determined to help her regain use of her legs. But unbeknown to Magnum, the two thugs that he was pursuing are still tailing him...