Frances O'Brien, devout Catholic and panic disorder sufferer, runs a very tight ship as Head Librarian at the Middleton Interactive Learning Centre. Her life unravels when she is forced to employ her ex-best friend, Christine Grimwood – now facing criminal charges – as the Children's Librarian. Suddenly, long-buried feelings that Frances has suppressed since she last saw Christine nineteen years ago rush at her like a truck. She must do all she can to contain her menacing past and concentrate on the biggest event of the library calendar year – Book Week.