The Man Who Knew Too Much

48 Hours Mystery Reports On Murder Of U.S. Journalist In Moscow

(CBS)  His family never has learned what was in those documents. But if Klebnikov felt threatened, he didn't show it. He had Musa and their oldest child come visit. It was the last week of Klebnikov's life.

"It's in many ways a silly thing to say, but at that moment, he had four days left to live," says Mark Franchetti, a reporter for The Sunday Times of London . He had dinner with Paul and Musa. "He was incredibly excited about Forbes. He was very happy to be here. He'd even talked about bringing his family here."

But that was not to be. Musa and her son ended their visit, and on the last night of his life, Klebnikov stayed late at the office. One by one, he called his brother, his sister, and Musa. But on the street, outside his office, someone was watching and waiting.

The relentless beat of Moscow's super-charged nightlife pounds on into the wee hours. But for Klebnikov, it was all background noise. "He was working so hard, he had no time to socialize, no time to go out," says Franchetti.

A true workaholic, Klebnikov usually spent his evenings in the sixth floor offices of Forbes Russia. Then he would head home on the subway, just as he used to do in New York.

He wrapped things up late on July 9, 2004. "About 10 p.m., he left the building from that entrance," says Capt. Vassily Glushchenko, of Russia's General Prosecutor's Office. He traces what investigators think happened next: "We think he was being watched."

A dark car with darkened windows trailed Klebnikov as he walked to the subway station. "He was on his way, and we think the car was still following him," says Glushchenko. "The whole way from his office."