Across whole show
Plot hole: During the party where it was revealed that Ethan is not a Crane and Theresa knew he wasn't, Gwen accidentally reveals she also knew. Even though he is upset with Theresa for keeping it a secret, Ethan says he can forgive her because he thinks she kept it a secret to protect him and that she never would have revealed the information to the tabloid. But Gwen says 'then why did she save the document on her lap top?' How did Gwen know the information was on Theresa's lap top? When she says that, it reveals that not only did she know that Ethan was not a Crane but that she knew Theresa knew, and that she was probably the one that sent the info to the tabloid.
Factual error: Dr. Eve Russell seems to be a "jack of all trades" in the medical profession, but it's impossible for her to know everything about every medical condition. When Theresa is going to marry Ethan, she goes and gets birth control pills and takes her first pill the day before the wedding. That night they make love. The next day, the wedding never takes place and Theresa flies off to find Julian. She forgets her second pill and sleeps with Julian. Eve tells her that since she didn't take a pill before sleeping with Julian then the baby is his. Any doctor would know that (and also suggest that) birth control pills are not completely effective until a person has been taking them for at least seven days, and a secondary form of birth control should be used. There's no way that Theresa's just taking 1 pill would protect her from being pregnant by Ethan, and this would still warrant a paternity test.
Plot hole: When both Gwen and Eve were in prison in January of 2005, Ethan was trying to get Theresa (whom Gwen had stabbed in the back) to drop the charge of attempted murder so that Gwen would be able to leave the prison. At the same time, Eve was being charged with three attempted murders, including that of Julian in 2001. But Julian loves Eve, and they have reconciled any differences they had three years ago, so why doesn't he also have the option to drop one charge of attempted murder? Submitted by DavidK93
Plot hole: On 11/18/03, Grace was looking at a construction paper scrapbook Jessica made in third grade. But where did the scrapbook come from? The Bennett house was sucked into Hell two years ago, and everything was destroyed. Submitted by DavidK93
Plot hole: On 9/27/04, Martin went to Sheridan's cottage and retrieved a gun that he said he had hidden there many years earlier, when the Lopez-Fitzgerald family lived there. But Beth burned Sheridan's cottage down in March of 2003, and it was completely rebuilt. So Martin's gun would not have been there anymore. Submitted by DavidK93
Plot hole: In December 2003, Rebecca and Julian are planning their wedding. Rebecca is blackmailing Julian into marrying her. Except, aren't they already married? Julian had his accidental marriage to Theresa annulled, and immediately married Rebecca (offscreen). Then it was revealed that Julian and Theresa had actually slept together, which nullified the annullment and Julian's marriage to Rebecca. But then it was further revealed the Julian and Theresa had never been married at all, which should have reinstated Julian's marriage to Rebecca. Instead, the previous wedding was never referenced. Submitted by DavidK93
Continuity: On 6/24/04, Fox told Whitney that the kitchen at the Sea Cliff Inn had closed for the night. He managed to convince the cook to make a couple of hamburgers for him and Whitney. (This happened offscreen, but they talked about it before and after.) Later that same night, on 7/6/04, Fox and Whitney went with Theresa and Chad to have a full dinner at the hotel's restaurant, hours after the kitchen had supposedly closed for the night. Submitted by DavidK93
Plot hole: Sheridan's and Paloma's respective ages do not make sense with respect to the Martin/Katherine storyline. In Martin and Katherine's flashbacks, we saw that Sheridan was a little girl, no older than eight, when they left, while Paloma was a newborn. So Sheridan is about eight years older than Paloma. But when Paloma appeared in Mexico, in May of 2004, she was still a high school student. At the oldest, then, she might be eighteen. Sheridan is about two years older than Ethan, and Ethan has been a practicing lawyer since the show started in July of 1999. So Sheridan must be at least thirty, making her more than twelve years older than Paloma. Submitted by DavidK93
Plot hole: Charity's promises don't seem to carry much weight. In the summer of 2001, the talking tree told her that Miguel would drown in the river unless she gave him up, and she agreed. They stayed together, though, and were even engaged to be married in December of 2002. The engagement fell through when Kay turned out to be pregnant with Miguel's baby, but they got back together again the next year. Then, in the summer of 2003, Death offered Charity a way to save Kay's baby, Maria, who was near death. He would spare the child if Charity agreed to give up Miguel. So she agreed. And as of December, 2003, they are still together. It's like these promises just never happened. Submitted by DavidK93
Plot hole: On 12/24/04, Beth was able to identify Mrs. Wheeler as Katherine Crane because of the heart-shaped birthmark on the back of her neck. Given that Katherine had extensive plastic surgery to hide her identity before she left Harmony, to the point that she is completely unrecognizable from facial features, why on earth would she leave such a distinctive marking untouched? Submitted by DavidK93
Plot hole: On 7/21/04, Tabitha was using night vision binoculars to spy on Charity and Ivy, and she lamented that they did not enable her to hear their conversation. If she wants to hear them, then why doesn't she use her scrying bowl? It lets her see and hear conversations taking place anywhere in Harmony, and she has been consistently able to use it even without her full powers. Submitted by DavidK93
Plot hole: Throughout the week of 5/31/04, Antonio and Hank looked for Sheridan and Luis. Antonio repeatedly stated to Hank, in no uncertain terms, his intention to kill Luis. This was no idle threat; Antonio freely displayed the gun he had, and he had previously shot at Luis. Hank is a police officer, and a much closer friend to Luis than to Antonio. So why doesn't he arrest Antonio for attempted murder? Submitted by DavidK93
Plot hole: Although Eve had told Grace about her secret past with Julian, she never told her that Liz was really her sister. She only told Julian, David, and Ivy. But in August, 2003, Eve and Grace began to have a conversation about the situation as if Grace already knew. Submitted by DavidK93
Plot hole: In December, 2003, Theresa is fighting the Cranes for custody of her son, Little Ethan. Fox and Whitney overhear that Julian and Rebecca are paying off Judge Reilly to rule in favor of them at every turn. Fox and Whitney share the information with Ethan and Theresa, who tell Theresa's lawyer Woody. When Rebecca discovers that Ethan is secretly helping Theresa, and he has to stop, Woody says that the case is hopeless unless they can turn the tide of public opinion against the Cranes. But why does nobody think of exposing Judge Reilly's corruption, so that the case can continue on a fair playing field, where Theresa is sure to win? Submitted by DavidK93
Plot hole: On 6/24/04, Martin and Katherine were in Mexico, reading a Harmony Herald article about Sheridan dropping the kidnapping charges against Luis. But that happened on the same day (not on the same day's show, but rather the same day in the characters' lives) as they were reading about it, so it would not have been printed in a newspaper yet. And even if it somehow had, it certainly could not have been transported to Mexico from a small town in New England on the same day. Submitted by DavidK93
Other: In the summer of 2004, in Puerto Arena, Paloma met a man, Nick, who told her that Luis and the other Lopez-Fitzgeralds were just trying to use her, and didn't really love her. Later that night, Nick kidnapped Paloma and tried to rape and murder her. She stopped him by bludgeoning him with a rock, and later throwing him into a support pillar that resulted in a structure collapsing on him and presumably killing him, before reuniting with Luis, Sheridan, and the Wheelers. And yet that fall, after she had returned to Harmony, Paloma flashed back to what Nick had told her and behaved as if she believed what the murdering rapist had told her about the people who ultimately rescued her from him. Submitted by DavidK93
Factual error: On 4/5/07, Chad had a flashback to when he met Vincent at a gay bar, over a year earlier. The song playing in the bar was Pink's "U + Ur Hand," which came from a CD that wasn't released until months after the scene took place. That particular song wasn't released as a single until about an additional year later. Submitted by DavidK93
Plot hole: When J.T. Cornell's dead body fell out of the wedding cake on 12/28/06, Rebecca fell all over him, lamenting loudly to everyone about how much she loved him, how much he meant to her, and how amazing the sex was. (She was really just looking for his flash drive.) However, Rebecca and Gwen had spent the entire fall trying to prevent Ethan from catching Rebecca and J.T. together, because Ethan was convinced that if Rebecca and J.T. knew each other, then it would mean Rebecca and Gwen were lying about the tabloid, which they were. So Rebecca's behavior should have been a huge tipoff to Ethan, but instead he had no reaction at all to this. Submitted by DavidK93