A Drowning TideWhen her next door neighbour goes missing, reclusive Merry dives into an irresistible puzzle. Merry lives a simple life on the Isle of Wight. For work, she creates cryptic crosswords. For pleasure, she swims in the ocean's cold embrace. In between, she keeps an eye on her neighbour, Lucas Manning, son of her late best friend Julia. Until one day, Lucas disappears. The Manning family has always had a sinister side only Lucas has been above suspicion.