Includes recipes and reading group guide

The close-knit Quinn siblings enjoyed the kind of idyllic childhood that seems made for greeting cards, spending each summer at Whit's End, the family's home on Cape Cod. Then comes the summer of 1964, warm and lush after a rainy spring -- perfect firefly weather. Sisters Birdie, Remy, Sailor, Piper, and their brother, Easton, delight in catching the insects in mason jars to make blinking lanterns. Until, one terrible night, tragedy strikes. Decades later, the sisters have carved out separate lives on the Cape. Through love and heartbreak, health issues, raising children, and caring for their aging parents, they have supported each other, rarely mentioning their deep childhood loss. But one evening, as they sit together at Whit's End to watch the sun set, the gathering fireflies elicit memories of that long-ago night, and a tumult of regrets, guilt, and secrets tumble out