Continuity mistake: When Doug picks up the bomb and throws it away, it is right in front of him and the others, where before the bomb was further right, behind a small barrel.
Continuity mistake: Jeremiah slaps Tony across the face with his right hand, but the quick shot after shows him finishing the strike with his left hand.
Continuity mistake: After Tony and Doug's escape attempt, Col. Hruda enters the scene with his pistol drawn at waist level, but the next shot shows him holding the pistol close to his chest.
Continuity mistake: After Alexis gives Tony and Doug their IDs, Doug holds his document high with his right hand, but the next shot shows him holding it lower.
Continuity mistake: Doctor Biraky instantly moves closer to then further from Colonel Hruda as they argue over Tony and Doug being defectors.
Continuity mistake: A large blue vase in Galba's study keeps moving itself into different positions on the table. Several shots later, it's gone altogether. (00:20:00)
Visitors From Beyond the Stars - S1-E18
Continuity mistake: An escaping Tony leaves the cell door standing open. But when the shot reverses angles, the door has mysteriously closed itself. (00:22:20)
Visitors From Beyond the Stars - S1-E18
Continuity mistake: In the saloon, the table at the lower right of the shot has nothing on it. After a brief close-up of the bartender, we cut back to the master shot - and even though no one's gone near it, the previously empty table now has a candle in a tin holder sitting on it. (00:28:30)
Continuity mistake: Doug and Tony are being interrogated by the Mars Mission flight crew. In two-shot, they're standing shoulder-to-shoulder with each other, no more than a few inches apart. When the shot cuts to a wider angle, Tony is suddenly several feet away. (00:10:00)
Visitors From Beyond the Stars - S1-E18
Continuity mistake: When the aliens use their paralyzer on Doug and Tony, the time travelers are both bending forward. But in the next shot, they've somehow straightened up, despite being "paralyzed." (00:01:45)
Continuity mistake: The alien freezes Doug and Tony and escapes to the cellar. But when the shot cuts back to the time travelers, they're standing much farther apart and are posed in different positions than they were when first frozen. (00:05:05)
Visitors From Beyond the Stars - S1-E18
Continuity mistake: The deputy takes one of three rifles from the gun rack, leaving two. In the next shot, however, there's only one gun left in the rack. A few shots later, there are two again. (00:31:20)
Visitors From Beyond the Stars - S1-E18
Continuity mistake: Tony jumps onto a brown horse and gallops into town to warn the sheriff. He doesn't stop on the way, but somehow arrives in town riding a black horse instead. (00:12:45)
Continuity mistake: Sgt. Isugi turns his head slightly right and down to acknowledge Tony's injury, but the next shot of Isugi shows his head straight forward, addressing Doug.
Continuity mistake: The distance between Ulysses and Epeios goes from distant to close together as the shots change.
Continuity mistake: In the dungeon where Merlin reminds Doug and Tony they are from the future, Arthur's hands instantly move from by his sides to holding the collar of his tunic.
Continuity mistake: When Arthur has the standoff between himself and Doug and Tony, Doug is standing abreast of Tony in the frontal shots and slightly behind him in the views from the rear angles.
Continuity mistake: When Tony begins fighting the Union soldier, Tony kicks the soldier's musket out of his hands and it lands to the right. The next overhead shot now shows the musket landed behind the soldier as Tony picks it up to fight another soldier.
Continuity mistake: While Doug is sword fighting with Michaels, Doug knocks off a three-candled candle holder off the table, but the next cut shows it back on the table.
Continuity mistake: When the major hands Doug the musket, Doug is holding it with his right hand, but the next shot shows Doug holding it in front of him with both hands.