Continuity mistake: In the first book, A Wicked Slice, Graham Sheldon was either 30 (beginning of Ch.2) or 31 (end of Ch.7). Now, in this fourth book, it is two years later, and Graham is "now at the age of twenty-nine" (middle of Ch. 1). He is getting younger.
Plot hole: In chapter 19, while talking about Leah Rose, it is stated "She and Rayford had spotted the seal of the believer. Otherwise she might have never given him the time of day." Fact is, when she is introduced in the series, it is Buck whom she meets and they notice the mark of the believer on each other's forehead. When she meets Rayford much later, they both already know each are believers.
Factual error: On page 296, Clapton mentions rehearsals for the Cream reunion began in May 2005 and lasted almost a month. But the reunion itself was held the first week of May, so it should say rehearsals began in April.
Other mistake: On page 197 the author writes "Margaret opened her eyes to sickly dawn...the clock read 6:45 p.m.". PM would be sunset, not dawn.
Other mistake: In the hardcover edition, published 2008. The mistake is on page 100 - "And when did faux mitzvah enter everyone's vocabulary accept mine?". 'Accept' should obviously be 'except.'
Continuity mistake: In the epilogue, when Chad is speaking in court, Sharon's attorney says that Ann's mother died "'last year'". During the flashback in chapter three, when the group is at the river before hiking to the cliff, Ann's mother is described as having died "a couple of years" ago.
Factual error: The main character, a WWI U-boat captain, mentions his vessel as having chemical air regenerators, an underwater airlock for divers to leave by, and of course dive suit(s), but I don't believe such craft of that era had any of those.
Plot hole: It took Ender only a few hours to unravel a mystery that 3 generations of highly educated and skilled xenologists and xenobiologists were unable to do. Pipo, of the first generation, was restricted by the rules imposed on him by the congress and he found out the truth but died because of it. After that Libo should have simply asked the piggies what happened and should have digged into the piggies' reproduction system, like he should have done in the first place as that is his job. Both Libo and Miro and Ouanda broke the rules so they shouldn't have had a problem with asking the right questions. They weren't afraid of the piggies either, loved them even. Libo would have had the answer to the reason for the death of his father and understood the piggies in a week, even though Novinha had hid the original data. If not him Miro and Ouanda would have had plenty of time to figure it out as well, just by asking questions. They would have learned a lot more about the descolada virus decades sooner as well, giving them more chance to combat it successfully.
Suggested correction: This entry first claims that it took three generations to find the solution, then states that individual in the first generation found it. If one xenologist can arrive at the solution from scratch, a literal genius like Ender can certainly rapidly come to the same conclusion using the data the next two generations compiled in the meantime.
They were all geniuses. The other 2 generations should have found out just a quickly or even quicker if they would have just simply done their jobs. It doesn't make sense.
But in Xenocide Miro's siblings like Ela, Olhado, Quarra and Grego are in the same league as Ender in intelligence, solving impossible questions without either Ender or Valentine even grasping it well enough to understand. Surely Miro isn't the only one lacking. They got that genius from their parents, the second generation xenologists Libo and Novinha who are both geniuses as well. At least the third generation should have figured it out long before Ender showed up. Mostly my point is they haven't actually done their job in all this time instead of them not being as smart as Ender to figure it out. Just ask the right questions like Ender did and voila. Its their job to ask questions but they didn't do it and their attitude towards the piggies is all wrong.
Plot hole: In the first Kingdom Keepers book it is established that Wayne created the DHI's because only they can see the characters come to life. However, later on in the book the park visitors can see and follow Maleficent.
Other mistake: When Eliza is talking to Midas at the July 4th party, in response to her question the text reads 'Marcus chuckled' instead of Midas.
Continuity mistake: In section 12 of chapter 11, Henry thinks about how "He, Pete, Beaver and Jonesy's wife had kept a secret among them", that Jonesy's "heart had stopped twice" after he was hit by a car about 10 months earlier. This is a mistake because earlier that day, in section 8 of chapter 3, Pete hadn't known about it - Henry tells Pete that Jonesy's "heart stopped in the ambulance", and Pete is shocked to hear it.
Factual error: Crowley chews on a pencil while composing reports. Pencils were not invented until a huge graphite deposit was discovered in England, well after the medieval period.
Continuity mistake: In the second chapter it states specifically that Lillith is texting on her iphone however after receiving a text from a friend she says she closes her phone or snaps her phone shut suggesting that she is using a flip phone.
Plot hole: It is revealed in the book that Melancholia's reflection is killed instead of Melancholia to cover their tracks. But reflections are frequently described in the book to be able to be spotted by sorcerers "a mile off." And yet not one Sanctuary Agent or the cleanup crew notice and alert the Sanctuary or Skulduggery.
Factual error: The book mentions Bilbo's sword as being originally made as a dagger for an elf. The problem is, proportional to the wearer, that doesn't work, weapons and tools have to be made with the user's exact size always in mind. The blade or handle would be too thick, or something else would be off. I know this from trying to use a figurine sword to open envelopes.
Suggested correction: The origins of Sting are largely unknown. Even though it was made by elves doesn't mean that it was meant for elves. The book doesn't say it was a dagger for elves, just the size was comparable to one. It's only said that it was very small for Elf standards and that means it has a small handle perfect for a Hobbit hand.
Factual error: The geographical issues begin about mid-way through with the characters at Glacier National Park in Montana for a wedding. When everyone begins to leave, Nick is taking the scenic route back to New York via car. Harper is getting a ride to South Dakota to catch a plane. The scenic route in Montana is Hwy 2, which the author labels as US Route 2 (technically correct but Montanans call it Hwy 2). Continually talks about 2 lane roads. Yet the next location the car stops at is Sleeping Elk. Higgins has them spending the night there. Sleeping Elk is a smaller than small town that is by the Interstate which entails getting off another Interstate to make the connection. Sleeping Elk has no motels and is less than 10 minutes from Bozeman. Higgins makes it sound like they are in the middle of nowhere when in reality, they are not. Also never mentions the passing by of other large cities including the state capital but rather mentions the smaller cities that are on Hwy 2.
Factual error: In Chapter 14, Cato is being awarded a grass crown for saving his centurion and the standard of his company. The grass crown was only given to generals or other higher officers, for rescuing an entire legion or army, and it had to be acclaimed by the entire legion he rescued. As an optio, Cato would be ineligible for a grass crown, his actions would not qualify for it, and he is said to be unpopular with his company, so a unanimous vote is highly unlikely.
Character mistake: Ch. 21: When Rocky tells Grace he blew the scabs off his wounds, he calls it a "black substance." But Grace never said it was black, and we know from when they get the first astrophage sample (Ch. 17) that Rocky doesn't understand "black" and "white." Even if Grace did explain what black is, offscreen so to speak, neither of them would know that Rocky's scabs later would be black. They never talked about it before (and if they had, Grace would have known not to mess with it).
Continuity mistake: When Aravis and the Horses are at the Hermit's and Shasta is at Anvard, the three decide it is time to resume their journey to Narnia. Aravis says, "We must see Shasta first and say good-bye to him - and - and apologize." At this point they do know he is the king of Archenland's son and will be staying in Anvard. That is revealed later to them in the chapter. She should have said, "We need to go to Anvard and get Shasta and then go to Narnia."