When Lana is in the shower, you can see steam billowing up around her just as she turns it on. Water can't get that hot, that fast.

Supposing this occurred at 20,000+ feet, when Kal-El rips open Lex's plane, the depressurization would have suffocated anyone aboard in a matter of seconds.

Gone

General Sam Lane's nameplate on his desk is facing inwards. He knows who he is so why would it face inwards?

The foundry had too much action despite the fact there's no one else there. Sparks from acetylene torches and grinders were too prevalent. Where are the foundry workers creating them? Where were the melt tenders at the crucible of molten metal? Where was their supervisor signing their time cards? There should have been absolutely NO other action going on without people inside a foundry.

The timing seems off on Chloe's kidnapping. Clark gets there and sees a door flapping shut and fresh blood. Then he and Lex have a seemingly brief conversation, and then Clark superspeeds off to the foundry. Meanwhile, Trent has taken Chloe to the foundry, tied her up, gone to visit Lionel who's probably under very tight security at the penitentiary, have a conversation for several minutes, then (presumably) drive back to the foundry to kill Chloe. It seems as if he would have been lucky to get to the penitentiary before Clark got to the foundry.

Clark seems to forget his X-ray vision - he doesn't scan the bomb scene or look through walls when Chloe was kidnapped.

During the scene where Clark and Lex are in Chloe's other safe house, just after Lex gets off the phone, Clark says to Lex "You looked me straight in the eye and told me she was dead." During this, he walks up to Lex, and they cut to a shot of the side of Clark's face, and then to a face shot of Lex. You see Clark's lips moving, but no words come out, and Lex doesn't respond until after Clark finishes his mouth movements.

Once again, the basis for Lionel's trial and conviction is annoyingly brief and vague. First, the trial doesn't seem to take more then a week - compare to the Simpson and Peterson trials' lengths for far more recent crimes. Further, the only evidence ever mentioned is Chloe's taping of Lionel's "confession" and her testimony to that effect. The confession, obtained by her using her "truth krypto-power," would be inadmissible (and pretty unbelievable) in a court of law. Lionel could claim he was kidding with an overly-annoying-but-persistent teenage reporter. And yet every step of the way the case is presented as if the confession and Chloe's testimony concerning it is the one major piece of evidence they have against Lionel and it all falls apart without her.

Chloe speaks very clearly and effortlessly for one who was just choked by a metal vice--she should be hoarse, or at least coughing. And shouldn't her throat be fairly bruised?

Trent's power is a little inconsistent. When he transforms his hands into weapons they stick out from underneath his sleeves. But when Clark throws himself at Trent, he turns into a blob of liquid metal. Also, when Lana hits him over the head with a metal shovel, sparks fly. All of which suggests that Trent wears no clothing and his coat, shirt, etc., are simply more shape shifted liquid metal. But how does he give it color? And wouldn't the extended weapons simply extrude as part of his sleeves, rather then stick out from underneath them?

If Trent's entire body is made out of liquid metal (see above), then why is he affected by the mace spray? His eyes are just solid liquid metal that look like normal eyes.

It's unlikely Lois, using a shovel, could have dug out Chloe's coffin in any reasonable period of time, much less in a neatly-excavated near-perfect rectangle.

Lana is back with yet another super-expensive vehicle, despite having had to sell everything she had and still not having enough money to get to Paris without Lex's help. Maybe he just gives her SUVs as gifts?

How did Lois get to the foundry? Perhaps significantly, she never answers Clark's question. Problem is, we in the audience don't know either.

Why does General Lane send armed men to bring in his daughter, guys who point guns in her direction? This seems like the opposite of "over-protectiveness."

Even a three-star General would be in big trouble for severely damaging a helicopter during an off-the-book mission targeting civilians.

Is Trent really such a dimwit that he didn't think to take the tracking bracelet off of Chloe?

At the cemetery, why does Trent go to interrogate Lois about where Chloe is? Why would he ask someone who clearly is digging up Chloe because she doesn't know where Chloe is or what really happened to her. Again, apparently he's just not very smart...

So why does Trent have superpowers? There's no indication he's a krypto-mutant so he must be a "metahuman." But then how did Belle Reve find out about him, and how did they hold him? And assuming he was there for committing some metahuman crime, how did Lionel get such a violent, uncontrollable psychopath out of the place?

More of a nitpick then a "goof," but...why has Lionel hired an assassin to track down and kill Chloe? There is never any indication that he's discovered that Chloe is alive. Was he just suspicious and then convinced a metahuman assassin to go around slicing up people like Lois on the random hope the guy would find Chloe?

Lois is out in the open investigating Chloe's death at the bomb site, and General Lane spots her. But later, she goes to Chloe's grave in broad daylight in a relatively open area and spends (presumably) hours digging up the coffin. This doesn't seem too smart, but then General Lane isn't very smart because he and his men don't spot her, either.

Is it really a good idea to have a relatively high-profile three-star general visiting the person who is secretly under his protection several times a week and leave a log of his visits around?

Does anyone find it odd that Clark is taking a nap during the day on the front sofa? He's got super-strength and endurance, and he has both a room and his barn loft. But for some reason he's lying on the sofa bare-chested when Lois sneaks out.

Presumably after hours of digging, Lois' clothes remain tight, form-fitting, buttoned, and clean to her boots-- only her face has some dirt on it.

Isn't General Lane going to get a report from the men who Clark picked up and casually tossed around, and wonder exactly what abilities Clark has?

Lois digs down to Chloe's coffin, finishes digging, and then just opens the coffin. First of all, they're screwed pretty tightly shut - you can't just open them up by yanking up the lid. Secondly, most U.S. state laws require that the coffin be placed in a concrete sleeve/liner - otherwise the ground above the coffin caves in as water swells up and then down.

Why is Chloe wearing a buttoned-up coat in the factory? She certainly wouldn't wear inside it in her own home-away-from-home, and it doesn't seem as if Trent would put it on her and button it up unless he was a really considerate assassin.

When General Lane's helicopter approaches the barn, nobody speaks but the closed-captioning has someone yelling, "Stay right where you are!"

If Chloe chose the name "Nellie Blye," then the FBI or Lex or Lane spelled it wrong - the log reads "Nellie Blye." Alternately, are we supposed to believe they added an "e" at the end just to make it any more difficult to figure out the alias stands for Chloe?

The explosion we see in the flashback is at odds with the one presented originally. Originally the bomb went off when the door was closed. Here the door closes and the explosion takes place at least 20-30 seconds later.

More closed-captioning discrepancies: when Clark approaches Trent he says nothing on-screen, but the closed-captioning has him asking if Trent works for Lionel.

Lois says she's putting the "worst two months" of her life behind her. So Chloe and her (unseen) dad are really a worse tragedy to her then the death of her own mother from no-doubt painful and extended lung cancer?

Why does General Lane try to bring in his daughter using a helicopter and doing low-level flyovers across Smallville? No doubt he paid his weekly visits to Chloe driving a tank...

Facade

Source: Tvtome