The movie jumps into high action gears immediately. The slowly-getting-out-of-his-amnesiac-shell Jason Bourne (Matt Damon) is now living in India with his girlfriend, Marie (Franka Potente), shut out from the rest of the world. Of course, like any Robert Ludlum spy thriller, you can't keep a good assassin down for long. Bourne notices a man dressed in the wrong clothes and driving the wrong car near the streets of this Indian pueblo - someone is after him and wants him killed. Bourne whisks Marie away in his jeep, crashes off a bridge, falls deep underwater, and tries to rescue Marie. Unfortunately, she is dead (and don't expect her to come back a la "Run Lola Run's" time-twisting narrative). So who is after Bourne? It turns out that Bourne is accused of killing someone during a CIA mission - his fingerprints are planted there! This begs the question: who got his fingerprints? Definitely not the Russian assassin who tried to kill Bourne in the opening sequence. Or maybe the hand-held camerawork swayed from any details that couldn't stay on screen longer than two seconds.

Bourne wants to clear his name. He goes after Pamela Landy (Joan Allen - always a welcome presence), a new agent who wants the truth as much as Bourne does. The trouble is that this Ludlum antihero is always one step ahead of everyone, including Landy and the reptilian CIA boss, Ward Abbott (Brian Cox). He travels from Naples to Berlin to Moscow, always evading the CIA. In one chilling moment, Bourne aims his telescopic rifle at the unaware Landy while communicating via cell phone. And he is still one hell of a fighter, even disabling someone with a rolled-up magazine! And boy, can this guy move! He jumps with the ease of a Jackie Chan and, at times, resembles a superhero with his dark overcoat. Oh, and he can do wonders with toasters!

The movie is murky with details and conspiracy rings, particularly involving Abbott who you know is as corrupt as anyone in the entire movie. We are never sure who or what is responsible or why. We just get carried along by Bourne's continuous search for the truth, especially the possibility that he murdered a Russian in Berlin (an apparent introductory drill into the life of an assassin).

"The Bourne Supremacy" is dense with details that do not amount to much. It is sort of a latter-day "The Fugitive" with Bourne visiting hotels, apartments, train stations - they serve as reminders of long-forgotten memories that can trigger his cabeza to dispel truths he wants the CIA to uncover. Yet we still never discover who this Jason Bourne really is. After two movies, we just know he is an able assassin and a quick-as-lighting fighter - Damon plays him as a robot with no sense of humor. Realistically, it makes sense but it can get on your nerves. To be fair, he seems more threatening than he was in "Identity" and we do get carried along by his charisma.

As for the interminable hand-held camerawork, it is unfathomable how director Paul Greengrass thought this was the best way to shoot. The camera swings between 180 to 360 degrees, rotating and panning with barely much stabilization. Some people on the movie discussion boards said it was a way of "implying action." How can you imply when you can't tell what may or may not be implied? Still, I grew accustomed to it (and the use of long lenses where there would be out-of-focus shots) but it could have used the more rapid-fire, stabilized approach of John Frankeheimer's "Ronin" or William Friedkin's "The French Connection." I will say that the climactic car chase, involving a taxicab and a SUV, is about as exciting as car chases ever get, and the hand-held camera approach exemplifies it.

"The Bourne Supremacy" is entertaining enough for its two-hour running time, but it is a hollow, cursory thriller. We don't know what is really at stake and we learn precious little about Jason Bourne. It is the latest Hollywood thrill ride, and it is engaging in a remote way, but it needs more carbs.