Winter Storms by Elin Hilderbrand

In this third novel of the Winter Street series, the tale of the Quinn family of Nantucket continues. Youngest brother, Bart, is still missing in action, while oldest Patrick is soon to be released from prison for insider trading. Sister Ava can't decide if she should be with Nathaniel or Scott, so she's dating both of them. Kevin, the middle brother, finally has the life he dreams of with girlfriend, Isabelle, and daughter, Genevieve. Meanwhile, patriarch Kelley is happily back together with his wife, Mitzi. Taking place over nine months, the reader follows the ups and downs of the families' lives among the beautiful island backdrop.