Based on the memoir The Intimate Adventures of a London Call Girl, Diary is interested as much in the workaday moments of the sex trade: lonely 3 a.m. hotel lobbies; etiquette and hygiene; encounters boring, unpleasant, or strangely sweet, all in leached London light. Piper is extraordinary, intermittently talking right to the camera in a straightforward, conspiratorial manner, the way a prostitute who's really good at her job would talk to a client.

Her nonwork life pulls you in too, with her self-conscious confessions to best friend and ex Ben (Iddo Goldberg), and the occasional tease of a world where she doesn't meet her sister's new baby with a Bettie Page wig in her handbag.

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Secret Diary of a Call Girl