Goofs

At around 1 hour 22 minutes, Gary switches between holding Madison's hair and not holding her hair in between shots.

When riding in the car with Gary, Jasper's arm position changes too quickly to be natural.

The characters are mistakenly given a Southern accent. New Orleans has a distinctive accent, which is not heard in the movie. Locally it is known a "Yat". The locals often say, "Where yat?" That is running "you at" together.

When real police officers pose as hit men, they meet with the suspects several times. They do this to solidify guilt, they use the multiple meetings as criminal intent.

When Gary is talking about influence of the moon, he says that it's always at the same distance from Earth. The moon has an elliptical orbit. Distance in perigee is 356400-370400 km and 404000-406700 km in apogee.

Gary never mentions "distance"; he said that the gravitational relationship between the Earth and Moon is fixed, which is true.

When Gary meets Madison's husband for the "contract" in the restaurant he could easily get him arrested and put him away for many years, but he chooses not to which makes no sense.

While true, it seems that Gary did not want someone to go to jail based on a situation in which he was personally involved and, possibly, responsible for. This is not a "Plot hole"; it's simply a character's choice.

When Gary finally picks up the phone after letting his phone ring twice before, his phone screen lights up while he holds it to his ear. Not only do phone screens go black when you cover the sensor next to the speaker, it also would show the call interface in this situation instead of the lock screen.

At 00:06:45 you can see the camera and camera person in the reflection of Jasper's sunglasses when they are sitting in the car.

At 0:50:00 you can see a crew member moving around in the reflection of the picture frame behind Glen.

Gary/Ron tells Madison, "A phase of the moon has nothing to do with gravity; it has to do with shadows. A phase is just how much of the sun's light we're blocking on the way to the moon."

Phases of the moon are caused by orbital mechanics; different parts of the moon are visibly illuminated as it revolves around the Earth. Eclipses are caused by shadows and the earth blocking the sun's light on the way to the moon.