Bob Mondello

Most theaters let audiences know the show is about to start by blinking the lights. Stratford's Festival Theater in Stratford, Ontario, is a bit more festive. Four burgundy-uniformed buglers and a drummer quicken the pace of hundreds of theatergoers who've been ambling up the hill from the banks of the Avon River. When curtain time arrives, a cannon will boom.

The Bourne Legacy, which opens in theaters this week, is the fourth thriller in the series, and the first without either Jason Bourne or the star playing him, Matt Damon. They're suddenly not necessary, even though the series is named for Bourne? Why am I not surprised?

Before a hero can rise, he must suffer a fall, and fall the Dark Knight quite spectacularly did the last time around, taking the rap for crimes he didn't commit, marking himself as a vigilante pariah and even letting Heath Ledger steal the reviews. No way that's happening in this last installment. A comic-book tale that has gotten darker than anyone thought possible is now careening toward a burst of light — possibly a nuclear blast — at the end of the tunnel.

Imagine you're a movie producer, and you've got a couple of hundred million dollars to gamble on a single massive blockbuster. Which genre do you suppose will be your safest bet — superhero? Action-adventure? Sci-fi? All of those have had huge successes, but they've also all had hugely expensive failures.

There's one genre, though, that's hardly a gamble at all. It's been almost foolproof since it first came into being in 1995: computer animation.

I know you're skeptical. Tobey Maguire's Spider-Man was last slinging webs just five years ago. Broadway's Spider-Man started singing about webs less than two years ago. Now here comes another Spider-dude: This Andrew Garfield guy. So he'd better be really something, right? Well, as it happens, he is.