Jonathan Harvey's new comedy tells the story of Charlie Hart, a "failed It-girl" with a drugs problem and a line in self-deprecating humour. Charlie is one of life's losers: a fag-hag who walks dogs for a living and suspects her computer nerd boyfriend is having an affair with her perfect sister. "It wasn't meant to be like this," she says.
She might be talking about this one-woman show. The more Charlie prattles on and sings pop ditties about her sad state and her crush on a vet, the harder it is to sniff out a plot. Her main function seems to be to make the audience feel better about their own lives. But it's not enough to build a show on.
Susan Tully's staging is lacklustre and the enterprise is fringed with desperation. The best reason to see the play is Abi Roberts: with curious fluffy hair, like a poodle perched on her head, she makes for a frisky Charlie.
Harvey's 1993 play Beautiful Thing was an enchanting coming-out tale that left you as high as a rainbow. Taking Charlie is the come-down.
· Until August 30. Box office: 0131-226 2428.