The memorable movie “Lost In Translation” turns 10 years this month. The film revitalized the career of Bill Murray (earning an Oscar nomination) and boosted Scarlett Johansson into elite status.

It’s been a full ten years but people are still asking the question: What did Bill Murray (Bob Harris) whisper to Scarlett Johansson (Charlotte) at the end of the film?
There are many answers. The Vulture has listed them down along with different videos of the same scene.

"I have to be leaving, but I won't let that come between us. Okay?"

 "I love you. Is the best thing I can [???]. At some point, he has to tell it to her."

"I won't see you till the next making of Santori. Go to that man and tell him the truth, okay?"

"You'll always be an independent woman, don't part mad. Tell the truth. Okay."

"When John is waiting on the next business trip ... go up to that man, and tell him the truth. Okay?"

And of course, some conspiracy theories that provide creative backstories for the film.
From Reddit: “Murray is actually Charlotte (ScarJo)'s husband from the future, who's come back in time because future him realized he neglected her too much. He does the commercial while he's there, because time travel is expensive. And he doesn't make a move on her, because he doesn't want to ruin her present-day marriage with himself. This would mean the woman Murray talks to on the phone was in reality future Charlotte. So the film is actually just Murray's character seeing "reminders of the hell he puts Charlotte through" and deciding she's better without him. That's why at the end, "he whispers to her that John is not good enough for her and that she should live a free and happy life on her own."

From GameFaq message boards: “A theory posits that the entire last scene was just a fantasy. The biggest piece of evidence for this point is that when the two characters say good-bye in the hotel, Charlotte goes up in the elevator, yet when we next see her she is somehow ahead of him. Writes the poster, "It just felt like it was a dream state that Bob happened to look over and see her walking down the street with her back towards him. It almost seems too random for it to be true."