"Letty is dead, Dom," Brian O'Conner (Paul Walker) told Dominic Toretto (Vin Diesel).

"I need to know for sure," Dominic replied.

"Then I'm going with you," Brian O'Conner said.

Paul Walker was famous for portraying the character of Brian O'Conner, an undercover agent in "Fast and the Furious" franchise. But, Walker in real life was killed in a tragic accident in the community of Valencia in Los Angeles Saturday.

His death means that "Fast & Furious" will never be the same again. The character of Brian O'Conner is one of the leading protagonists in the franchise and appears in all the film series, except for "The Fast and the Furious: Tokyo Drift."

The news of Paul Walker's death has only started to sink in with his co-stars, fans, family and friends.

The last tweet on Walker's Twitter page, before the accident, was on Nov. 29. It included a still from the upcoming "Fast & Furious 7." Paul Walker's last tweet on Nov. 29, 2013, here.

"Will you be ready?" the final words in Walker's tweet convey a very different meaning. The fans, friends, family, co-stars and other people who loved Walker were certainly not ready for this. A source confirmed to BuzzFeed that "Fast & Furious 7" is still in the production phase. The scheduled release date is July 11, 2014, but after his death, the future of the franchise looks bleak.

Difficult To Write Off Brian O'Conner From "Fast And the Furious" Franchise

It was unclear how many portions in "Fast & Furious 7" that Paul Walker had not completed. Even if the scenes were complete, it will be difficult for Director James Wan to complete the film without Walker by his side. Also, Walker died in a terrifying car collision. He was in the passenger seat of a swanky new Porsche GT, exactly the type of car that was featured in Wan's "Fast and the Furious" series.

Brian O'Conner has been the part of "Fast & Furious" series from the very beginning. What started off as a lowly action film in 2001, soon became one of the finest hits of the year. Walker's last "Fast & Furious 6" raked in $788 million worldwide and certainly was one of the most commercially successful films in the series.

Walker's death in a car crash came as a serious blow as fans will never forget his contribution as a fine actor. Brian O'Conner is not dead, he is immortal.

Let's go back and watch "Fast & Furious" movies and let Brian O'Conner push that NOS button.

Rest in peace, Paul Walker.