Cinemark in Court for Aurora Movie Theater Shooting

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AURORA, CO -- "The Dark Knight Rises," a movie that impacted lives on and off the big screen. It was a midnight screening on July 20, 2012 when a gunman sprayed the audience inside an Aurora Colorado movie theater with bullets.

Twelve people were killed and 70 injured -- the largest number of casualties in a shooting in the United States.

James Holmes was sentenced to life in prison for what he did inside the Century 16 movie theater.

Monday,  28 victims and families were back in a Colorado courtroom. They’re suing Cinemark, based in Plano, for not doing enough to prevent the tragedy in the first place.

According to the civil lawsuit, Cinemark, which owns the theater where the shooting happened, should have hired armed guards for the packed opening night show like other theaters across the country did. Extra security, the suit says, could have spotted Holmes wearing tactical gear in the parking lot.

The lawsuit also argues alarms should have gone off when Holmes opened the emergency exit door before he opened fire. Cinemark has said in court documents it could not have foreseen the attack.

Survivors of this tragedy are hoping for justice in the real world, not just in the movies.

Opening arguments are expected Tuesday.