After nosy neighbor Mrs. Wilgus (the inimitable Kathleen Freeman) alerts Donna and Alex about Mary having a noisy party while they were out, the kids get lectured about being the children of a doctor, and that they should behave accordingly. Not too long after this, Jeff takes a ride from Mary's troublemaker friend Tommy Hendricks, who doesn't have a license and has taken his father's car out for a joyride, and they get into a minor accident while fleeing a cop. He hides it from Donna and Alex, but must tell Mary when she notices him favoring his injured left arm. Not wanting to disappoint his parents or ruin his father's practice with a small-town scandal (i.e., Jeff (to Mary): ""I can see the headlines now: 'Doctor's Son Injured as Police Chase Hot Car'. It would ruin Dad!""), Jeff goes incognito to the new pediatrician who has just set up shop in Hilldale. (thetvdb.com)