Continuity mistake: In a close up of the tar wagons before James crashes into them, James disappears.
Visible crew/equipment: When James crashes into the tar wagons, a crew member's finger can be seen pushing him.
Character mistake: The narrator says that James ran into two tar wagons, but he ran into four. Two is the amount of tar wagons that derailed.
Continuity mistake: James leaves Elsbridge Station with the brake coach at the rear. When James arrives at Knapford Station, the brake coach is in the middle.
Other mistake: James passes a green signal, but there are tar wagons ahead.
Continuity mistake: When Henry sneezes at the boys, you can see that the boys got ashes on them before the smoke has even touched them yet.
Continuity mistake: When Henry sneezes at the boys, in the shot of the boys with the smoke rising up, you can see that they already got ashes on them before the smoke had even touched them.
Continuity mistake: Throughout most of the sequence where Thomas pulls the Troublesome Trucks, the trucks keep changing positions numerous times and many of the trucks disappear and reappear. Also, in a few scenes, there is only 1 truck or just 5 trucks.
Audio problem: When Sir Topham Hatt, the policeman, and Thomas' crew are at Elsbridge Station, Thomas whistles, but his crew is standing on the platform.
Revealing mistake: In a close up of Thomas' driver, his cap brim is falling off and he has a hole in his head.
Revealing mistake: In a close-up of Thomas at the beginning of the episode, his wheels aren't moving for 2 seconds. This is easier to see in the restored version.
Revealing mistake: In a shot of Henry going around a bend in the country, you'll notice that the other side of the coaches is seen painted tan but the other side is painted green and white. This is because of budget limitations.
Revealing mistake: In the first close-up of the policeman, the camera wobbles.
Character mistake: In the shot of Gordon pulling Percy, he is congratulating Percy, but Percy didn't stop the accident, Gordon himself did. Percy didn't try to get out of the way, Gordon had to put his brakes on as hard as he can. So why is Gordon congratulating Percy?
Continuity mistake: US Only: Henry reverses on to the siding, then he leaves it again. His tender also hits the station building.
Other mistake: In a close up of Bertie, he has no driver.
Audio problem: When Sir Topham Hatt goes "Mmmmmmm..." if you listen closely, you'll hear Ringo Starr's lip smacking in the background very faintly. This goof is only visible in the American version of the episode. (00:03:00)
Thomas, Terence and the Snow - S1-E13
Revealing mistake: When Thomas gets dragged out of the snow by Terence, he is still covered in snow all around him, but two shots later, the snow has vanished.
Toby and the Stout Gentleman - S1-E21
Revealing mistake: When Toby and Sir Topham Hatt are at Lower Arlesdale, Toby's face is loose.
Toby and the Stout Gentleman - S1-E21
Other mistake: Toby passes the Post Windmill twice, but that is on Thomas' branch line.
Answer: He was in the water.