Continuity mistake: When Peter recalls himself alone in the rain with a teddy bear by his side, the bear is sitting upright in the first shot, but resting against the baby with its head skewed in the following angle.
Continuity mistake: Peter is lying in the cradle with Tinkerbell flying around, the fluttering of her wings making his hair messy. When he stands up his hair is neatly brushed to the right.
Continuity mistake: After Jack removes his Hook-styled wig his hair is messy and caked. Then the fight starts and the next time we see him his hair is shorter, cleaner and perfectly brushed.
Continuity mistake: During the insult war the black kid next to Peter leans forward and fakes a puke. When the shot changes he's sitting still.
Continuity mistake: The green haired mermaid is very close to Peter, but a shot later she is far away, swimming towards him.
Continuity mistake: In the plane, the way the note book is held changes between shots: by the top or by its side.
Continuity mistake: When a lost boy fires balls at the pirates, they slip and fall on the deck. Angle cuts back to the boy firing and the deck is suddenly spotless and empty, and the same pirates repeat the previous actions.
Continuity mistake: When Pan is about to kill Hook and his daughter grabs his arm and says "Please daddy, let's go home", Pan's arm swaps from bent to straight between shots.
Continuity mistake: When Hook and Peter's battle starts, Hook's sword falls on the floor. Its position changes between shots.
Continuity mistake: Before the crocodile is about to fall on Hook, he is either lying on a shadowy place or a sunny one, depending on the shot, no continuity at all.
Continuity mistake: After Hook trips over the clock, the position of the kids in the background increases/decreases randomly between shots.
Continuity mistake: After the clock falls on the ground and Hook trips over it, he ends up kneeled, head sunk, and starts to remove his cape. When the angle changes he is now lying down, face up, and removing the cape again.
Continuity mistake: When Peter is grabbing the mast trying to touch his kids' fingers, in the wide angle half of his body is stretching out towards them. A frame later, from another angle he is in a different position, totally crouched.
Continuity mistake: When Smee introduces Hook, his brass speaker swaps hands between shots.
Continuity mistake: While Wendy shows Peter her Peter Pan book, one can see the tip of her right finger holding the page, but a shot later from a wide angle, her right hand is nowhere to be seen.
Continuity mistake: After Wendy tells Peter about Neverland, the bronze elephant sculpture on the night table swaps from facing left to facing forward between angles.
Continuity mistake: When Wendy tells Peter about Neverland, his fringe swaps from falling over his eyebrow to perfectly brushed by his forehead, between angles.
Continuity mistake: After the kids have been abducted, Wendy tells Peter about Neverland. The pillows behind her swap from wrinkled to perfect between shots.
Continuity mistake: In London, Liza grabs Jack by his scarf and drags him violently inside. When the angle changes, she is hugging him softly.
Continuity mistake: In the plane, Peter's daughter shows a drawing with the plane burning. Depending on the angle she's either crouched next to the paper or standing away from the paper. This swaps back and forth.
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.