Vivian Lawrence was born into old-money Boston, but when her family fortune vanishes so does her carefully curated life. Desperate, she turns to an old family legend that ties her to the Knox and its inheritance, seeking a way into the exclusive secret society. She doesn’t expect that entry to come in the form of Peter, a Knox insider with movie star good looks and just enough roughness to his charm to make Vivian weak in the knees for the first time in her life. Far from Boston’s glittering elite is newcomer Taylor Adams, a young nurse eager to leave her humble past behind. When the effortlessly glamorous Vivian lands in her ER after a suspicious fall, Taylor is instantly captivated. But then Vivian abruptly disappears without a trace, sending Taylor on a search for answers that pulls her into the Knox itself --- as their new employee.

July 1985. It’s a normal, sweltering New Jersey summer for soon-to-be seventh grader Bee Kocsis. Her thoughts center only on sunny days spent at Deer Chase Lake, on evenings chasing fireflies around her cul-de-sac with the neighborhood kids, and on Max, the boy who just moved in across the street. There's also the burgeoning worry that she'll never be as special as her younger sister, Audrina, who seems to effortlessly dazzle wherever she goes. But when Max’s little sister, Sally, goes missing at the lake, Bee’s long-held illusion of stability is shattered in an instant. As the families in her close-knit community turn inward, suspicious and protective, things in Bee’s own home become increasingly strained, most of all with Audrina, when a shameful secret surfaces.