Continuity mistake: The golden sword of the Pan gets a lot of use in the final fight scenes. A lot of shots show that the sword gets tiny notches on the sides from all of the clanging against things. However, when Peter passes the sword to the large Lost Boy, the sword's edges have been beveled smooth.
Revealing mistake: In one shot when a group of the Lost Boys are catapulted up into the air so that they can land on the side of Captain Hook's pirate ship, when they all hit the wooden pillared side it can clearly be seen to bounce as they land on it. It is possible to give some leeway on their weight making some effect - but not so much as to make the wood 'bounce' like it is made of soft material. (01:46:30)
Continuity mistake: During the scene where Hook meets Peter for the first time, Smee gags Peter with his glasses and eye patch. As he puts them in Peter's mouth, you can see the pirate behind Peter holding them in place. In the shot where Hook removes the gag, the glasses are suddenly in firmly enough not to be held - the pirate's hand is now on Peter's shoulder. (00:42:15)
Continuity mistake: During the school play, Peter's phone rings and his wife turns her head to him. When the shot changes she's looking straight and turning her head again.
Continuity mistake: When Peter is carrying his children away from Hook's ship to leave Neverland, Hook starts running after him, threatening to always "leave daggers with notes bearing the name Hook" and then he stops at the top of the ramp. In the closeup he is waving his hooked hand as he shouts after Peter, but in the next shot he is waving his left hand forward, holding his sword outwards. (01:53:35)
Continuity mistake: When Peter is onboard Hook's ship fighting with a pirate below deck, he runs behind a very large globe and then pushes a large statue forward, trapping the pirate. Between shots as Peter does this the position of the large globe beside him completely changes (the curved wooden part and the actual globe, which has rotated itself). (01:50:45)
Continuity mistake: In the flashback when Peter is remembering how he lost his Mother and got to Neverland, there is a scene where Peter is a baby and the stroller that he is in is blown down a hill by the wind. Between the three shots in this scene, the stroller keeps getting closer to the tree that it is sitting beside - even though the wind is blowing in the other direction! (01:32:10)
Continuity mistake: When the Lost Boys bring the large black pot over to the dinner table and set it down in front of Peter, in the first shot it sits nice and flat on the table, but in the next shot it is sitting wonky, with a plate half-under it. In the next shot it is back to its original position. Additionally the items around the pot differ. (01:09:10)
Continuity mistake: When Hook is sitting in his chair with the vanity tables at either side of him (with several mirrors on each table), we can see that there are two pots on each vanity table. Each pot has a small grey powder-ball sitting on top of it, which has red ribbons attached to it. During the scene the balls/ribbons differ in position and then at the very end of the scene (when Hook begins laughing at his plan to make Jack and Maggie love him) both of the grey powder balls have vanished. (01:01:20)
Revealing mistake: When Smee stops Hook from his suicide attempt, the gun is accidentally shot off and the bullet hits one of the small model ships in Hook's little water tank. When it shows the ship (on fire) sinking down under the water, you can see the small rod devices that are actually pulling the ship down into the water. (01:01:05)
Continuity mistake: When Jack and Maggie are in the large rope net that is hanging from the mast of Hook's ship, they are reaching out of the net trying to grab for their Dad's hands. In one shot Maggie is reaching both of her arms out of the net but in the immediate overhead shot she is only stretching one arm out. (00:45:15)
Continuity mistake: When Peter walks onboard the deck before Captain Hook comes out, he is wearing an eyepatch, pirate hat and a purple cloak. In the first shot the purple cloak he is wearing is pulled up over his mouth but in the immediate next shot the cloak is now down around his neck. (00:38:00)
Visible crew/equipment: When the camera zooms into the hook-shaped window-lock opening itself, you can see the faint reflection of the camera and its operator in the silver plate that the lock is attached to. (00:21:45)
Revealing mistake: Near the end of the film, when Pan climbs over a snow-covered brick wall (and just before he re-acquaints himself with the dog in the dog house) the brick wall jiggles twice as he climbs over top, as though it was made of styrofoam. (02:06:05)
Continuity mistake: When Peter is flung from the slingshot, he begins to fall at an angle. Yet when he falls into the pool, he is going straight down, which would not be possible given his trajectory. (01:05:20)
Continuity mistake: When the phone is thrown outside & later dug up it is clearly a dummy (fake) phone.
Continuity mistake: When Hook is giving Maggie and Jack lessons about why their parents hate them, on Jacks desk there is a large brown book and a piece of paper. There is an inkwell too which between different shots constantly goes from being on the brown book to the paper, then back etc. (01:06:30 - 01:07:05)
Revealing mistake: When the kids are having the big battle with the pirates on the ship, they have that gun that shoots out eggs. You can very easily tell that in one shot there is a fake rubber chicken in the basket on the top, and in the very next shot it is a big fat live chicken.
Visible crew/equipment: After Hook is eaten by the giant crocodile Peter shouts "Bangarang!" and the kids start yelling it as well. Look on the far right of the screen, behind and underneath the crocodile, and you can see a pair of legs in blue denim jeans just standing there. (01:59:41)
Visible crew/equipment: When the Lost Boys begin to chase Peter around their hideout there is a shot that starts high up in the trees and moves down as it closes in on Peter running from the kids. As the shot passes a support beam attached to the track that Rufio's sail-ship runs on you can see the camera's shadow cast on the support. (00:52:22)
Answer: 1) Though it is never fully explained, the mystical way Peter Pan would come and go from Never land. 2) It was Smee who was doing the spying. When Hook asked Smee, "This can't be my great and worthy foe?" Smee replied, "I have all the information here." He had a file of paper work on Peter. 3) Hook knew where the Lost Boys were, When Peter asked, what happened to the Never Tree. Tinkerbell said, "Hook burned it when you didn't come back." He considered the Lost Boys not worth the effort. It was Peter, he wanted.