What's it about? Ask him - though I'm not sure even he knows.

It is, however, riveting entertainment that will keep you puzzling for ages.

It begins when Laura Elena Harring realises, while being driven along Hollywood's famous Mulholland Drive, that she is about to be murdered, escaping and taking refugee in an apartment occupied by aspiring actress Naomi Watts.

Unfortunately, Harring has now lost her memory and has no idea who she is.

So the two women are plunged into a classical film noir plot as they try to establish Harring's identity and find out who is trying to kill her and why.

This is great stuff, full of nicely off-beat characters - a hitman, a film director, Justin Theroux, a detective, Robert Forster, and Ann Miller and Dan Hedaya in cameo roles.

But just as we think all the mysteries are about to be revealed, everything changes.

The same characters are still around but now they're different, doing different things in what appears to be an entirely different story.

I can't figure it out and what's more I don't care because I enjoyed it so much.

The mood veers from black comedy to terror and underlying it all is a hard look at Hollywood, the place where the dreams of budding starlets can turn into nightmares.

The ensemble cast is excellent while Lynch, though an infuriating film maker, is also a very, very good one.