Continuity mistake: Season 2, Episode 19: "Today Is The Day, Part 2" - When Queeg tells Jesse to secure all side arms and plasma rifles, take Officer Goodnow's body to the cool room and return to duty, he walks halfway up the metal staircase behind him twice.
Visible crew/equipment: When John gets back from seeing Riley's body, he sits down at the kitchen table in front of Sarah. Sarah tells him he shouldn't have gone. John then says, "It was a risk, I know". As he says this, the shadow of a boom mic can be seen on the wall behind him.
Other mistake: Season 2, Episode 20: "To the Lighthouse" - In the flashbacks to the jungle, John is considerably younger. Sarah however, is not. Adults don't change nearly as much as a child would in the same time period, but this is a pretty big jump back in time. John is only a child in the flashbacks, putting Sarah in her mid to late 20s. Yet she still looks 35 and even has the exact same skin and facial structure.
Continuity mistake: Derek orders Cameron to work on the flat tire of their truck. Cameron quickly turns her head away from Derek to the truck. In the far shot, Cameron turns her head to the truck again.
Revealing mistake: When Cameron is firing back at the man on the passenger side of the van coming at her, the man drops the gun in his lap when Cameron shoots him. The very next shot shows the gun tumbling around on the road on the opposite side of where he was shooting.
Visible crew/equipment: Season 2, Episode 21: "Adam Raised a Cain" - When James Ellison leaves the elevator after talking to Catherine Weaver, a camera is reflected in the elevator door on the far right of the screen.
Continuity mistake: *Season 2, Episode 21: "Adam Raised a Cain" - When James Ellison leaves the elevator after talking to Catherine Weaver, Catherine's fringe has changed from its original position. At first it was diagonally across her forehead, but when James leaves the elevator, it is swept back.
Continuity mistake: Season 2, Episode 21: "Adam Raised a Cain" - When the water delivery Terminator kills Derek there is no visible entry wound. But a few shots later there is a bullet hole suddenly in the middle of his forehead.
Continuity mistake: Season 2, Episode 21: "Adam Raised a Cain" - When the water delivery Terminator kills Debbie by shooting her in the head, there is no visible entry wound. But later when Derek finds her body, there is a bullet hole suddenly in the middle of her forehead.
Revealing mistake: Some of the security cameras in the Weaver's household are in some rather odd locations. We see a camera's point of view of Savannah looking up through the glass table that she's doing her homework on, and a camera's point of view of Savannah hiding behind the TV. Besides the obvious need for John Henry to keep an eye on her, what is the need for these cameras? And where are they placed? Later on in the episode, when John Henry is talking to James Ellison about why he stopped looking for Sarah Connor, pretty much all of the cameras on the wall next to them are recycled shots from the actual show and couldn't possibly be from physical cameras due to their awkward angles.
Continuity mistake: While in the garage of Ms. Weaver's house, a terminator, out to get Savannah, takes four bullets from Sarah in the back. Later as you see the terminator go after John and Savannah, you can see his back as he is coming up some stairs, and the terminator now has five bullets holes in its back.
Answer: It was cancelled due to declining ratings. Season Two had about half as many viewers as Season One.
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