Discover this summer's most irregular love story . . .

Connie's smart. She's funny. But when it comes to love, she's only human.

As a brilliant mathematician with bright red hair - Connie's used to being considered a little unusual. But when she's recruited for a top-secret code-breaking project, nothing can prepare her for working with someone quite as peculiar as Luke.

From the Sunday Times bestselling author Jenny Colgan comes a charmingly quirky tale of love, friendship . . . and the possible obliteration of mankind.

'Quirky, funny and romantic' Sophie Kinsella

'A riotous cocktail of geeks' Matt Haig, author of The Humans

'It's not so often that I fall so completely in love with a book . . intelligent, funny, moving and beautiful' Rowan Coleman, author of The Memory Book

'Joyous, suspenseful, poignant, funny, heart-breaking, and above all else, a pleasure to read' Claire North, author of The First Fifteen Lives of Harry August

Jenny Colgan is the author of numerous bestselling novels, including Christmas at the Cupcake Café, Little Beach Street Bakery and Welcome to Rosie Hopkins' Sweetshop of Dreams. As Jenny T. Colgan she has also written the Doctor Who tie-in novel Dark Horizons and several Doctor Who short stories.