A tense and compelling psychological thriller by S. J. Watson, the bestselling author of Before I Go to Sleep. The story follows Julia Plummer, whose quiet life is shattered when her younger sister is murdered. Determined to uncover the truth, Julia ventures into a hidden online world of anonymous encounters and dangerous secrets. As she gets closer to the answers, she finds herself caught in a web of deception, obsession, and betrayal.

Packed with suspense and unexpected twists, Second Life explores themes of identity, trust, grief, and the hidden lives people lead.