In one of the many fantastic reviews for Sinead Moriarty's fourth novel, In My Sister's Shoes, the reviewer praised Sinead's ability to apply 'the light tender touch to dark, painful subjects'. It's a perfect description of how Sinead tells the story of a younger sister stepping in to help out when her older sister is diagnosed with cancer. In a similar way to Marian Keyes, Sinead manages to balance light and dark with wonderful finesse, warmth and humour.

Kate O'Brien is thirty and has very little to think about except trying to keep her balance as she totters up London's media-land ladder.

Fiona O'Brien is Kate's responsible older sister - with a husband, twin boys, a dog and now ... a life-changing problem.

It's a problem that means Kate going back to Dublin. Pronto. There she finds herself stepping into Fiona's shoes - and discovering that she's definitely not cut out to be a domestic goddess. On top of that, the ex she thought she'd got over years ago turns up to haunt her.

Will either of the O'Brien sisters survive? And even if they do, can either of them slip back into their old shoes ever again?