Other: When the truckers are harassing Supergirl, one of them gets thrown 20 feet, and yet they don't find that unusual? They just keep coming until they can't anymore.

Revealing: When Supergirl is passing by the town, flying towards the mountain, she flies very close to the ground but no one looks at her.

Continuity: At the beginning of the movie, Selena drives her car to the right side of the house. When the shot changes, the car is several feet further back and is now heading across the front of the entrance.

Continuity: When the vortex breaks the window, the sound of glass breaking is heard but no glass pieces are seen. In a later shot, the floor is filled with tiny pieces of glass.

Continuity: After the red haired girl and her friend let go off the monkey wrench, they start jumping and end up close to a steel tank. In the following angle they've moved six feet back.

Revealing: When Supergirl flies through the window to fight the invisible monster, half of the screen shows her jumping in a school uniform and the other half exiting with the Supergirl outfit. Watch closely and you'll notice that her halves don't match, giving the sense that she is missing part of her body.

Revealing: When Supergirl flies towards the mountain and passes by the town close to the pavement, she casts no shadow.

Revealing: When Selena breaks the brick wall, the concrete holding it flutters, revealing it's a mere brown piece of fabric.

Continuity: After the window gets fixed, the position of the cushions around the window differs between shots.

Revealing: When Supergirl flies out to fight the invisible monster, the shadow of the crane lifting her is reflected on the building.

Revealing: After Supergirl lands on Earth, she flies very close to a lake, but she doesn't have a reflection in the water.

Continuity: When Supergirl crushes the rock, her hair is curly and messy. In the following shot it's brushed and straight.

Continuity: When Selena holds on to the fridge door an American flag appears and disappears between shots.

Visible crew/equipment: When Selena visits the school, there's a tube reflected on her window. When her car starts to move we see it's part of an umbrella-like structure used for lighting.

Continuity: When Supergirl and the principal enter the girls' dorm, the jogger girl turns around to run away twice.

Revealing: When Supergirl is flying at super speed, the cars from the green-screen movie are also sped up.

Revealing: When Supergirl falls on the planet ground and gets released from the mirror trap, she gets up and the hard floor stretches down, revealing it's a rubber mat to soften her fall.

Revealing: When Supergirl is writing her letter of recommendation at super speed, it's way too obvious that the scene's been speeded up in several takes because the leaves in the background move fast and in a very weird and unnatural way.

Continuity: While Selena is burning the chicken, in the close up shot big flames come out, but a split second later, from a different angle, there's just smoke.

Continuity: At Selena's picnic, the label of the champagne keeps turning to face the camera.