Continuity mistake: David and Steve are playing racquetball. There is nothing on the brown wooden floor, and neither have a towel. David becomes woozy, so Steve checks on him. There is a white towel on the floor, behind their feet, which disappears when they resume their game. (00:01:42 - 00:02:20)
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.
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.
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."
Continuity mistake: In Chapter 2, Hester Latterly tells Mary Farraline about her brother James who was killed in the Crimea. But in previous books (for example, The Face of a Stranger), her brother who was killed in the Crimea was called George.