The Fifth Letter by Nicola Moriarty

The Fifth Letter : Paperback : Penguin Books Ltd : 9781405927079 : 1405927070 : 23 Feb 2017 : Erika and Clementine have been best friends forever. So when Erika needs help, Clementine should be the obvious person to turn to. But for Clementine, the last thing she needs is Erika asking for something, again. But a barbecue should be the perfect way to forget their problems for a while. Especially when their hosts are happy to distract them. Which is how it all spirals out of control.