Principal Vernon's daughter was kidnapped (which may explain why he has no tolerance for hoodlums).
After missing the last train to Clarksville, Micky went to LA and wound up in a motorcycle gang.
Sergeant Carter was taking pictures of a naked girl out on Venice Beach (probably learned the fine art of nude photography from Hogan).
Jody Davis got caught buzzing around Los Angeles on a hopped up dirt bike. Mr. French should have kept a better eye on him.
Tom Bradford was a raving drunk, which may be why his son Tommy tried to run away to Montana in the next episode.
Life Imitates Art: Kent McCord (Jim Reed) worked as a Los Angeles Reserve police officer later in life. Reserve police are volunteer or paid police, whose duties vary by jurisdiction. He's now retired.
The Other Darrin: Jean Reed was played by two different actresses, and her incarnation in season seven is practically Same Character, But Different. The decade can account for her radically different wardrobe and hairstyle choices, but also gone is the understanding Jean Reed who knew the risks and was happy anyway, until in the final episodes she almost seems to resent her husband's job.
You Look Familiar: Gary Crosby was a part-time regular as Officer Ed Wells on Adam-12 and appeared in two different roles (the first time as a firefighter, the second time as a publicity-happy paramedic) in season one of Emergency!.