The Night of the Kraken - S4-E6
Continuity mistake: The first time we see the bartender, he has a rip in his shirt on the back side under his right shoulder blade. In all the other scenes, the rip no longer shows.
The Night of the Kraken - S4-E6
Continuity mistake: When Jose' Aguila pulls down the net, he is in front of the bar. The next shot he is instantly punching a bad guy in front of a window, which is several yards from where he was at the bar.
The Night of the Kraken - S4-E6
Continuity mistake: During the bar fight, Aguila and the goons he is fighting disappear from the scene, showing only West fighting some bad guys. Instantly Aguila appears in the exact same area where West was fighting.
The Night of the Kraken - S4-E6
Other mistake: While walking on the waterfront after the bar fight, West and Aguila's clothes are dry where moments before they dove out a window into the ocean.
The Night of the Kraken - S4-E6
Continuity mistake: While struggling under water with the kraken, West surfaces, then the next shot shows West deep underwater and breaking the surface again.
The Night of the Kraken - S4-E6
Revealing mistake: Bubbles from the underwater camera crew are visible as West swims wearing the experimental diving gear.
The Night of the Kraken - S4-E6
Revealing mistake: The strings controlling the kraken's tentacles are visible as it attacks West and Aguila.
The Night of the Kraken - S4-E6
Factual error: West and Artie are trying to move a cabinet from the wall. A closeup shot shows West's left hand entering from the right side of the shot to press a button that allows a secret panel to open. Unless West twisted his left hand 180°, then him pressing the button as shown is not possible.