When maths teacher Zoe Swift meets the irresistibly funny and charming Jack Damon at her friends' wedding, sparks fly faster than you can say "the square root of sixty-nine." And when Jack turns up at her school, newly recruited as a supply teacher, she can't ignore the intense effect he has on her when their paths cross in the corridors. But Zoe is still reeling from her husband's recent jaw-dropping betrayal...