Mr. and Mrs. North comes from the early days of American TV, starting when Harry Truman was still technically present. It ran a couple of seasons and was largely forgotten after that. You can tell by watching old episodes on YouTube or Dailymotion, because they almost all have scratches and blotches.
It still tends to be a diverting show, though. The lead characters are adapted from a then popular series of mystery novels by Richard and Frances Lockridge. The plots are fairly simple so as to fit in a half hour running time, but they're varied. Whodunits predominate, but they also did other kinds of thriller plots. Leads Richard Denning and Barbara Britton also showed a notable amount of chemistry.
