Plot hole: WARNING SPOILER AHEAD. The alien impersonating Skokes changed the ship's destination to Earth. This is impossible to have been done, as the first order the captain gave was to lock the course in and "Skokes" admits his security clearance was removed after his rescue from his prison. It also couldn't have been done by another alien spy, as no other survivors beyond the 4 (2 human and 2 aliens) were found and the only other alien spy was unconscious, so he couldn't have helped out in any way.
Revealing mistake: When the android Mac 27 tries to plug a digital cable into the data port on the back of his neck, the camera cuts to an extreme close-up and we see the data port very obviously slip and move by a quarter-of-an-inch across his skin.
Revealing mistake: The eyes of the actor playing Gideon the robot can be seen through the eye slits of the robot mask in some shots.
The Vessel - S7-E5
Revealing mistake: The set lights are reflected off the TV screen and electronics store window as Worthy looks into the store.
Factual error: The episode has Mona Lisa and Teddy traveling to Yakima, Washington, showing green, tree covered hills. Yakima is in the middle of the Washington State desert, so the topography would be mostly flat, desert terrain, with yellow and brown colors.
Suggested correction: Don't think you have ever been to Yakima because Yakima is surrounded by hills and the only part that is flat is in the valley and Terrace Heights. I live in Yakima, and the map they showed of E Yakima Ave and Chestnut Ave and filming is wrong, though, because that area of the map is mostly neighborhoods, small businesses, and mini-marts. No trailer parks with a bridge nearby that has hills behind it in that area.
Visible crew/equipment: Through the whole episode, set lights are reflected in the getaway van's windows and body.
Continuity mistake: As Michael and Will discuss killing Kamala, Will's hands are raised in front of him, then the next shot shows them at his side.
Continuity mistake: While Michael speaks with Kamala, Michael holds an instrument in front of him in the head-on view. The view from his back left side shows his hands hanging by his side.
Continuity mistake: A woman in a long tan coat passes opposite Chris twice as he pedals down the sidewalk.
Continuity mistake: During the sonogram of her unborn baby, Callie's hand is open or closed depending on the camera angle.
Continuity mistake: Mia's hand is resting on her pillow and instantly changes positions between shots as she speaks with Allen.
Revealing mistake: It is obvious the film was reversed when the plant takes over the old lady's body - given away by the unnatural direction and movement of her hair.
Free Spirit - S7-E13
Other mistake: The storm has knocked out power to the facility, the emergency generator did not engage the supply power and is out of fuel, but in some parts of the building there are lights on.
Free Spirit - S7-E13
Continuity mistake: Rachel trips over Kate's body that has a syringe prominently protruding from the neck in the closeup. The syringe is missing entirely in the long shot of Kate's body.
Free Spirit - S7-E13
Revealing mistake: The corpse's left eye twitches as Rachel lifts the bed sheet off the body.