Deep Blue Sea by Tasmina Perry

Passionate. Explosive. Impossible to put down. Tasmina Perry is back with her most spectacular novel yet. Beneath the shimmering surface lies a dark secret... Diana and Julian Denver have the world at their feet. With a blissful marriage, a darling son and beautiful homes in London and the country, Diana's life, to the outside world, is perfect. But nothing is as it seems... When Julian dies suddenly and tragically, Diana is convinced there is more to it than meets the eye. She calls on the one person she had never wanted to see again - her sister, Rachel. A former tabloid reporter, Rachel appears to be living the dream as a diving instructor on a Thai island. The truth is she's in exile, estranged from her family and driven from her career by Fleet Street's phone-hacking scandal. For Rachel, Diana's request opens old wounds. But she is determined to make amends for the past, and embarks on a treacherous journey to uncover the truth - wherever it may lead..