Hmm, the double homicide theory does make some of the more bizarre features of that show a bit more comprehensible:
But after a while a question occurred to me: How did Mike and Carol hook up?
The show conveniently skips over that question. You never learn what happened to Mike’s first wife or Carol’s first husband. The kids never mention their original mother or father. The kids’ grandparents never visit after the wedding. Only once, in the series’ pilot, did anyone display a photo of one of the missing parents.
Clearly, something had happened to these two families that was so traumatic no one dared to bring it up. But what? Nuclear meltdown? Alien abduction? Evil clown attack?
One day, while watching another channel’s afternoon movie—the Alfred Hitchcock classic Strangers on a Train—suddenly I saw, with a startling clarity, the answer to my mystery: Mike murdered Carol’s husband and Carol killed Mike’s wife. It was a crisscross killing.
Go here to read the rest. Based upon my 37 years at the bar, I think this theory somewhat more likely than the idea that a “blended family” like this one could become, overnight, one, big happy family. It would also finally explain why Mrs. Brady was hiding out among the Amish: