Plot hole: After Chloe and Lionel's discussion we see the Naman and Segeth glyph. This glyph is colored in black and white unlike it was in Season 1 episode Skinwalkers.

Continuity: When Chloe and Lionel finish their discussion in the cave the shot focuses on the Naman/Segeth glyph and focuses through the glyph to a transition shot of an island that Lex is on. When we first see this island it is flat and covered with trees. The next time the island is shown there is now a large volcano/mountain that was not their when we first see the island.

Continuity: When Lewis says to Lex ".the bitch that set you up." he is holding the stick with the point in his wrist. In the very next shot he is gripping the stick by the side and not from the point.

Other: Early in the episode, Clark uses his heat vision to blow up a police car. In the shot where we see the policewoman diving for cover, there is a front view of the car as it is exploding. The license plate on the front of the car IS a Metropolis plate, however, as the plate falls off, the white placard that auto companies and dealerships place in the license plate frames on new vehicles before they are registered and which are removed once plates are installed is visible.

Continuity: As Morgan Edge hands Lionel the bag with the mason jar of blood the camera is on Lionel's side and bag has a very neatly folded flap to keep the top closed. As Lionel takes the bag, while the camera is on Edge's side, the opening is wrinkled and not folded shut as it was before.

Factual error: While Clark is inside the semi-truck being delivered to Morgan Edge and Lionel Luthor he manages to remove the kryponite apparently duct taped to his chest. This cannot be possible since he even a small piece of kryptonite (Lana's necklace) was enough for him to trip and fall from several feet away! Imagine a larger chunk like the one they strapped to his chest. He should have been severely weakened by it and the radiation should go through anything in that truck besides lead and the tape used to secure the rock on Clark's chest is not made of lead. His ability to not only have the strength to rip the taped rock off his chest but to then launch it to the far side of the truck should not be possible in view of the nearly immobilizing effects kryptonite has on Clark.

Continuity: When Clark and Jonathan return home, Jonathan collapses on the couch. It shows Clark rushing to his side. But in the next shot where it shows Martha's reaction, you can see Clark rushing to his side again.

Continuity: When Lex pulls the gun on Linoel, when the camera is on Lex he is pointing the gun in Lionel's face. When the camera is on Lionel, Lex is pointing the gun in Lionel's chest.

Plot hole: When Edge needs the vial of Clark's blood back, Edge holds Clark's parents hostage. Clark decides to use a sharp piece of kryptonite rock to cut his skin and give Edge a new sample. When Clark picks it up, and when he places the kryptonite rock on his skin, he shows no sign of the usual affects of the rock which include the green lines radiating up his arms.

Factual error: When the bad guy shoots at Clark with the kryptonite bullet, he is facing the other way, then hears the shot, turns around and tries to catch the bullet. This couldn't have happened because a bullet from that kind of rifle is faster than the speed of sound. So the bullet would have hit him in the back before the sound could reach his ears.

Revealing: While there was a close up on Clark while he was asleep, you could see a small cut right above his eye, which is impossible if he can't be hurt.

Revealing: At the beginning of this episode Lana is supposedly naked. However, when she dives off of the pier, she is wearing a pair of red shorts.

Continuity: When Lana undresses before jumping into the lake, she kicks all her clothes right beside Clark's feet. But in the shot where she dives off the end of the pier, all of the clothes are piled well away from Clark.

Revealing: When Nicholas throws the lighter it is supposed to be lit so that it will light the gas and kill Lana but as it flips through the air, before Clark grabs it, the lighter has no flame at all.

Plot hole: In this episode Clark keeps having dreams of this girl who moved in Lana's old house, and is in a coma. In one of the dream sequences Clark says he doesn't have powers in the dreams. Yet in a previous dream he's with Lex at his mansion, and Lex takes a Japanese Katana and attacks Clark with it, but Clark blocks the sword with his arm and the sword blade shatters. If he doesn't have any powers in the dreams then shouldn't he have been hurt?

Revealing: Lana and Clark are supposed to be skinny dipping at Crater Lake. When Clark pops up out of the water and goes "boo" to Lana she spins around and splashes Clark for making her worry. As she starts to splash Clark her body comes out of the water far enough to see she is wearing a tan tube top instead of actually skinny dipping.

Continuity: When Clark goes to give the flowers to Sarah, her uncle answers the door. The first shot is of the uncle through a flyscreen door, which he opens. We then see a shot of Clark outside the door, and then the uncle opens the flyscreen door a second time.

Continuity: At the beginning when Clark and Lana are on the small pier by the lake, it alternates from sunny to shady between shots during the scene.

Plot hole: How did Perry manage to tie himself to the barrier without Lana noticing?

Continuity: At the end of the episode, Perry and Clark arrive at the intersection to wait for the bus. They walk out into the intersecting road, and the bus arrives, positioned in the middle of the road, since they are standing in the right lane. Perry and Clark say their goodbyes, and a new shot of the bus from behind, shows the bus is in the right lane only as it starts up from the stop.