Plotlines that were abandoned mid-series with no explanation

That would be Bobby Martin. Years later another character went up to the attic to look for something and found a skeleton wearing a ski cap with “Bobby” embroidered on it.

On one of the DVD commentary tracks, they (jokingly) explain that Boxey died of cholera off-screen.

Do I dare mention LOST? I never followed it so herhaps someone can set me straight.

Babylon 5 had a couple. Commander Sinclair’s girlfriend, a freelance prospector shows up at the station a few times, but gets dropped as a regular character. Even more puzzling is the fate of the station’s licensed telepath Talia Winters: In an earlier episode, Kosh the Vorlon hired her for an assignment that was actually a trick to get a psychic recording of her personality. Later, it is revealed that the Talia we thought we knew was a false persona and that her true self was an undercover agent for Psi Corp. Appalled at what has happend to Talia, Security Chief Garibaldi remembers the incident of the recording and rushes from the room to see if it can be used to restore the version of Talia they knew… and then nothing. They don’t even say it didn’t or couldn’t work. So the Talia Winters character is dropped and nothing further happens, except later it’s strongly implied that she was callously murdered by PsiCorp after she was of no further use.

I think I mentioned this in another iteration of this thread, but at the beginning of this season of Fringe they introduced a new character, a female FBI agent (a pretty hot one, at that) who took unusual interest in the main character’s cases and seemed to have some kind of weird fixation with religious prophesy, but after about 3 episodes she was gone, never mentioned again, and the season is almost over now. It seemed like they wanted to do something with the character, but the actress fell down a well or something.

This is doubly baffling. Background doesn’t mean squat if you have the drive. It happens all the time. My mother’s family were literally Okies. Moved west in the Depression with 6 kids in a Model A truck to take up new irrigated farm land. The oldest son worked to help the family. But: The next oldest became a college professor, the third became a high school principal, the last (and 7th born after the move) became a college president. (And in the next generation, the women started to go to college.) There are college degrees all over the place now. One’s upbringing isn’t a life sentence.

Secondly, of the core group of interns, it is Alex that had by far the worst upbringing and you don’t mention him? WTHuh?

Andrea Thompson wanted to leave the show. She has a history of moving around.

On the series Queer as Folk the character Emmett, a flamingly gay promiscuous southern guy who usually works as a waiter of gofer and later a porn-star, became involved with a very rich much older man (Emmett was 30-ish and the old guy was around 70). The old man, George, wanted him as a kept boy but they actually fell in love. Unfortunately George died while they were trying to join the mile-high club.

In his will George left Emmett $10 million. His family (he’d been married and had kids and grandkids who no longer spoke to him) challenged the will claiming undue influence and senility and the like and Emmett got a counsel to fight it (one of the lesbian characters who was a lawyer). The family entered negotiations and offered him $2 million in cash so long as he’d sign a statement claiming he and George had never been involved sexually or romantically (which they knew was a lie but it was to spare the family a scandal). Emmett considered it but refused and said “I’ll see you in court” or something similar; the jist was he’d rather not get a penny but tell the truth than lie about the man he loved for $2 million.

This was never one time referred to again. Emmett entered two major relationships (Ted and the closeted football player) and had some other plotlines but they never mention the status of the lawsuit or give any indication that he might one day be rich or anything like. While it was a sweet-ish scene that love mattered more to him than principal, there’s no way in hell he or anybody else would drop a better than decent shot at $10 million or that his friend the lawyer would let him.

Not exactly what the OP asked for but I’ll mention it anyway: on Deadwood a troupe of actors come to town whose leader was played by Brian Cox. The show’s creator David Milch had plans for a story arc with them but learned halfway through Season 3 that there was to be no Season 4, and there were lots of plots in the air, so the actors, while not quite dropped, became a sort of “Why the hell mention them in the first place?” background characters whose fairly elaborate shenanigans (e.g. Cox evicting his longtime mistress to move one he just met in, the death of a very aged Shakespearean, Cox’s obvious close friendship and what-promised-to-be-an-interesting past with Swearengen were pointless to have referred to [they were originally to go in on a con together], were all just dropped.

On Big Bang Theory what ever happened to Bernadette?

She appeared on the show three episodes ago the last time they focused on Howard. She didn’t disappear, she’s just not a regular.

He also wore the most expensive clothes available and drove a very expensive car, I think a Mercedes. Greene raised his eyebrows and Farina scoffed, with the implication being that he was way to openly spendy to be on the take and was very wealthy, without an explanation of whether he always was or came into it.

Farina was a police officer before going into acting.

At the end of season 2 of “Scrubs,” J.D. was dating “Tasty Coma Wife,” played by Amy Smart. As season 3 began, there was no mention of it.

Her husband died and they broke up because “Tasty Coma Wife” was only with JD because she got off on the thril of it being wrong.

You know, if that was purposeful, that’s really rather clever. I.e. some sort of deal with the time travel made it so that he returned to an existence where she never was, so while as viewers we see her absence, neither he nor anyone else would. And since no one knows that she ever existed, none of them can comment on it to explain the situation to the audience.

In season 1 of The Bill Engvall Show, they had a dog. There was even an episode that dealt with the dog being old and sick and needing an operation. After a while, they didn’t have a dog anymore, with no explanation.

Hey, look over there! A race car!

Actually, [they don’t break up](For the next few times he meets her, he does something dramatic which makes her want to continue with the relationship, before pointing out to her that she only likes dramatic relationships and they both agree to stay together in a quiet, dramatic-free relationship. Read more: My Drama Queen | Scrubs Wiki | Fandom).

As I recall, Zach Braff also mentions that they dropped the plot line in the DVD commentary track for this episode.

David Chase,who created the Sopranos, said he got asked a lot about the Russian but before the last season Chase said he was not coming back.

Actually, the writers said they were going to address it, but the writer’s strike screwed it up. Now their excuse is “we went too long without mentioning it, so we’re just gonna ignore it.”

Paulie ‘Walnuts’ Gualtieri: You’re not gonna believe this. He killed sixteen Czechoslovakians. Guy was an interior decorator.
Christopher Moltisanti: His house looked like shit.

Yeah, always wondered about him, too. He should have popped up again later.

In the Alien Nation TV series, they had a storyline where Matthew’s Sykes’ partner wasn’t killed by a Newcomer with a shotgun, but by a sniper who killed him just before the AP slug drilled him. There was supposed to be this shadowy conspiracy going on, and Sykes and Francisco were stumbling into it. Then they dropped it. I rather liked the idea of playing off the movie’s events, but they never developed it.

Watching boxsets tends to show up things you might not otherwise notice. Christopher in The Sopranos is near death from a gunshot wound in a couple of episodes and then it is dropped and seldom if ever mentioned again afterwards.