Thank You for Not Morphing - S1-E3
Visible crew/equipment: In the scene where Prue comes home and finds Andy inside the manor. There is a shot where if you look behind Andy's shoulder you can see half of the body of the director in the background in the observatory room sitting in a director's chair. (00:16:00)
Continuity mistake: After the Grimlock kidnaps the child getting the ball, Prue goes after it. But the demon opens a hole in the earth and jumps through it and it closes. Prue then reaches the spot where the Grimlock disappeared and she is surrounded by dead leaves and trees. Then it goes to another shot of Prue turning around. Suddenly the trees and dead leaves are gone and she is standing in an open area with green grass and no trees.
I've Got You Under My Skin - S1-E2
Continuity mistake: In the previous episode, Piper tried out for a job as a chef at a restaurant called "L'Opera Ristorante" and was hired by Chef Moore. Then in this episode, she works at a bar and restaurant called "Quake," but she talks about Chef Moore quitting and leaving her in charge of the establishment, so it's not meant to be a different place.
The Truth Is Out There... and It Hurts - S1-E8
Continuity mistake: In the teaser, the demon attacks Dr. Mitchell, killing him and also destroying his irises. His eyes turn white, and later dialogue confirms that the irises were gone from his eyes. However, when the Charmed Ones find his corpse, his eyes are open and his irises are visible. (00:01:10)
Something Wicca This Way Comes - S1-E1
Continuity mistake: In the scene when Piper and Jeremy are in the taxi, Piper gives him a fortune cookie. You can see her closing the box. In the next shot of Jeremy, you can see the box is still open. (00:31:15)
Something Wicca This Way Comes - S1-E1
Continuity mistake: At the end of the episode the newspaper Prue is holding keeps changing from facing the camera to facing her. And as she turns to the house she drops her hand (and the newspaper) to her side but in the next shot she is holding it to her chest again. (00:40:25)
Character mistake: In the attic, Melinda Warren is awed at how thick the Book of Shadows has gotten. But according to information from previous episodes, the Book was started after Melinda had died, so she wouldn't know how thick or not it was.
Thank You for Not Morphing - S1-E3
Continuity mistake: In this episode one of the shape shifting demons from across the street attempted to take the book of shadows out of the house. He managed to carry the book to the door, but could not take it past the threshold of the house. But in the later series it is always stated that evil cannot touch the book of shadows.
Continuity mistake: When Prue describes the way the warlock Matthew traveled instantaneously, Melinda tells the sisters that it's called blinking, and that Matthew "must have copied it from another witch." But later in the series, every warlock encountered by the Charmed Ones had the ability to blink, and it was considered exclusively a warlock ability, meaning that no witch would have had it. (00:21:30)
Continuity mistake: In this episode, Leo tells Phoebe that white lighters are sent to their charges by "a group of elder white lighters known as the founders." However, by later seasons in the series, the word "founders" was never used. The leaders of the white lighters were simply known as the "elders." (00:14:15)
Continuity mistake: When Prue runs into Susan Trudeau at the restaurant, she asks if she's Andy's sister, only to find she's his ex-wife. But Prue knew Andy all through high school - she would have known he didn't have a sister. (00:12:25)
The Truth Is Out There... and It Hurts - S1-E8
Continuity mistake: In this episode the truth spell is before the demons page in the Book of Shadows, but in 'Out of Sight' the truth spell is after the demons page.
Something Wicca This Way Comes - S1-E1
Continuity mistake: At the beginning of the episode we see a man standing in the rain in front of the sisters house. After he starts walking away, they show a completely bare tree in front of the house. The next morning when Piper is driving away, they show the same tree with leaves and flowers on it. Trees do not grow that fast.
Plot hole: When Prue first releases Matthew, he blinks several times, then blows out the windows and jumps out. Why would he do this and reveal who and what he is when he could have simply blinked? Obviously it was just a way to get the police involved so Andy could be chasing Prue through the episode.
Thank You for Not Morphing - S1-E3
Factual error: At the end of the episode the girls are waiting for Victor. He doesn't show up but sends a package containing a home movie. As they are watching it, they see Christmas when they are little girls. Phoebe can't be more than 4 yrs old, 5 at the most. Since she was born in 1975 that would make the home movie take place in approx 1980, but she gets a Wedding Day Barbie, which didn't come out until 1996.
Is There a Woogy in the House? - S1-E15
Continuity mistake: At the beginning of the final scene in the attic, the view from the window prominently features the Transamerica Pyramid. At the end of the scene, the view is completely different, showing the Ferry Building and the Bay Bridge. (00:41:30)
When Bad Warlocks Go Good - S1-E18
Continuity mistake: Prue finds Brendan, as a warlock, over the corpse of Father Austin. He runs away and she pursues him. He insists that he "didn't hurt Father Austin. [He] found him like that." Prue counters, "Before or after you turned into a warlock?" His response is, "After. When I saw what [my brothers] did to him, I was crazed. The rage turned me into a warlock." So doesn't that mean that he found Father Austin before he turned into a warlock, not after? (00:17:55)
Suggested correction: He said after because Brendan has always been a warlock. He was born that way.
Wicca Envy - S1-E10
Continuity mistake: At the end of the episode, when Leo and Piper are saying goodbye he reaches out and touches her face, but when the angle changes his hands are instantly back at his side. (00:43:05)
The Truth Is Out There... and It Hurts - S1-E8
Revealing mistake: When Phoebe asks Piper what she thinks of her boss, you can see that Holly's tattoo has been covered up, because that part of her wrist is darker than her skin. (00:17:15)
Suggested correction: Maybe Holly covered it up with makeup because she isn't supposed to have tattoos for her job? A lot of jobs still don't allow piercings and tattoos today but all those years ago it was even harsher.
There are multiple instances of covered tattoos during the early seasons. I noticed it the most on Alyssa's back tattoo.