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 The Little Shop of Harry-Ever-After, 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 novels In the Blood and Dark Horizons and several Doctor Who short stories.