Every relationship has rules. What if they all changed? Hura and Cillian have a happy, secure marriage and are on the brink of planning a family. But when Hura's teaching career suddenly gets derailed, they decide it's time to explore a fantasy: opening up their relationship. Roses has never been monogamous, but her connection with elusive James-who works all hours as a junior doctor-is electric. They're falling for each other, but both have reasons for keeping their distance. Thrown by the intensity, Roses convinces him they should try sleeping with other people. When these two couples collide, life shifts on its axis and starts to spin out of control. As Roses and James fight to keep secrets from the past at bay, and Cillian and Hura test the limits of trust, they must all decide which lines to draw-and which to cross. A passionate deconstruction of the complexities of sex, love, honesty and betrayal, this is a debut novel pulsing with desire. OPEN SEASON marks Cassie Werber out as a major new talent.