Ken and Abby Gardner lost their mother when they were small. Their father, Adam, is a brilliant oceanographer who raised them mostly on his own. Ken is now a successful businessman with political ambitions and a picture-perfect family, and Abby is a talented visual artist who depends on her brother’s goodwill, in part because he owns the studio where she lives and works. As the novel opens, Adam is approaching his 70th birthday. He has always managed his bipolar disorder with medication, but he is determined to make one last scientific breakthrough. So he has secretly stopped taking his pills. Meanwhile, Abby and Ken are both harboring secrets of their own, and there is a new person on the periphery of the family --- Steph, who doesn’t make her connection known.