Continuity mistake: The bathroom in Belle's penthouse underwent a bit of unexplained remodeling. In March of 2004, when Jan tried to electrocute Belle, Belle was taking a bath in a freestanding tub in the middle of the room. Later that year, after Philip had moved in, the bathroom had a regular shower and the room wasn't even large enough to have accomodated the tub we had seen before.
Factual error: On May 17 and 18, 2007, there were frequent references by multiple characters to a "level four typhoon" on its way. However, there is no such thing as a level four typhoon. Typhoon strengths are not designated by numbers, but by the prefixes "severe" and "super." On the other hand, strong tropical systems near Australia, which is where these events took place, are not even called "typhoons," but "tropical cyclones," although there are numerical categories for them.
Other mistake: In the episode airing 10/18/05, Roman gets a cell phone call while in Alice's bar. The phone call is from Kate, informing him that John is about to storm the penthouse. During the phone call, Roman only says, "What the hell happened?" and "I'll get over to the penthouse as soon as I can." He proceeds to tell Bonnie and Lucas that he has to go and he'll be back, and nothing more. But later on in the bar, Sami asks where Roman went, and somehow, Lucas seems to be able to tell her that Roman went to the penthouse because of "Something about John." How did Lucas know that phone call was regarding John when Roman never said it for him to hear? (00:29:55 - 00:30:55)
Factual error: On 6/15/05, Marlena told Mimi that "the first rule of the Hippocratic Oath is 'First, do no harm.'" It is a common misconception that the Oath begins with that phrase, which actually appears nowhere in either the ancient or modern versions. But Marlena, a psychiatrist, would certainly know the actual Oath.
Continuity mistake: On 6/20/05, Bo and Billie talk about how they are going to look for their daughter Georgia via a website for "adopted children who have turned eighteen and are looking for their biological parents." However, Georgia was supposedly still sixteen in the fall of 2004, per Billie's statements, so she couldn't have been more than seventeen at the time this conversation happened.
Continuity mistake: On 4/16/04, Belle mentions that she felt particularly close to the late Alice Horton, because she "never had a grandmother in [her] life." But although she has never been seen on-screen, the show has always indicated that Marlena's mother was still living. Marlena has visited her parents in Colorado, and her son Eric is supposed to be living with them. Recently, Belle even made hot cocoa for her mother, saying that she would do it the same way as "Grandma Evans."
Revealing mistake: On 1/26/04, the big, muscular animal handler was struck very lightly in the back of the shoulder, with what looked like a flimsy rubber or plastic object, and fell unconscious. It's ludicrous to imagine that such a weak "blow" could even injure that man at all, let alone knock him out.
Continuity mistake: At the end of the episode on 6/5/07, Julie read Santo DiMera's letter, in which he declares a vendetta against the Brady family. She is translating the letter from Italian, and her husband Doug cuts in to say "Brady" and "Salem" when he was correctly able to guess what was written. On 6/6/07, at the beginning of the episode, the scene was repeated with Julie reading the letter. But this time, she read those words herself.
Plot hole: On 9/14/04, Hope tells Patrick that Billie Reed is the only person who has ever come between her and Bo. But that statement is more than a little ridiculous. Stefano DiMera, Princess Gina, Megan Hathaway, Larry Welch, and John Black have all come between Bo and Hope.
Continuity mistake: On 5/17/04, Jan removed her "Mrs. B." costume and revealed herself to Shawn. The camera was off her for a moment, and when it returned she was holding a wig and a prosthetic nose. But the wig was much darker than the powdered grey hair she had as Mrs. B., and removing the nose doesn't account from the elaborate facial makeup she had been wearing that completely vanished while the camera was on Shawn.
Continuity mistake: At the end of the 12/9/03 episode, Bo receives a message on his PDA, and he and Hope see that it's Roman's obituary. The obituary appears again at the beginning of the 12/10/03 episode, but Bo and Hope act through a completely different scene leading up to it.
Plot hole: On 6/8/04, when Marlena first saw Victor on Melaswen, Victor told her all about how Jan tried to murder him under Nicole's orders. Then, in May of 2005, Marlena finally returns to Salem and soon has several civil encounters with Nicole, as if she doesn't know that the woman conspired to commit murder. She also fails to denounce Jan, even though Marlena's daughter's best friend Mimi could greatly benefit from such a revelation since she currently stands accused of attacking the woman.
Factual error: When Sami called the psychic hotline in 2004, the caller ID identified her as "Samantha J. Brady," presumably for her supposed middle name Jean. But Sami's middle name is actually Gene, the masculine version of the name, because she was named after Eugene Bradford.
Continuity mistake: At the end of the 12/30/03 episode, Kate and Roman cut the wedding cake, a red liquid seeps out, and Roman says, "Blood." At the beginning of the 12/31/03 episode, Kate and Roman cut the wedding cake, a red liquid seeps out, and Kate says, "Is that blood in the cake?"