On the eve of her 40th birthday, Alice’s life isn’t terrible. She likes her job, even if it isn’t exactly the one she expected. She’s happy with her apartment, her romantic status, her independence, and she adores her lifelong best friend. But her father is ailing, and it feels to her as if something is missing. When she wakes up the next morning she finds herself back in 1996, reliving her 16th birthday. 

From the author of the New York Times best sellers All Adults Here and This Time Tomorrow, a smart, highly entertaining novel about a tight-knit group of friends from college - and what it means to finally grow up, well after adulthood has set in. Friends and former college bandmates Elizabeth and Andrew and Zoe have watched one another marry, buy real estate, and start businesses and families, all while trying to hold on to the identities of their youth. But nothing ages them like having to suddenly pass the torch to their own offspring.

At the age of 29, Hannah Martin has lived in six different cities and held countless meaningless jobs. On the heels of leaving yet another city, Hannah moves back to Los Angeles and takes up residence in her best friend Gabby's guestroom. Hannah goes out to a bar one night with Gabby and meets up with her high school boyfriend, Ethan. Just after midnight, Gabby asks Hannah if she's ready to go. A moment later, Ethan offers to give her a ride later if she wants to stay. Hannah hesitates....

Six years after the fight that ended their friendship, Daphne Berg is shocked when Drue Cavanaugh walks back into her life, looking as lovely and successful as ever, with a massive favor to ask. Daphne hasn’t spoken one word to Drue in all this time - she doesn’t even hate-follow her ex-best friend on social media - so when Drue asks if she will be her maid-of-honor at the society wedding of the summer, Daphne is rightfully speechless.

Martha Friel just turned forty. Once, she worked at Vogue and planned to write a novel. Now, she creates internet content. She used to live in a pied-à-terre in Paris. Now she lives in a gated community in Oxford, the only person she knows without a PhD, a baby or both, in a house she hates but cannot bear to leave. But she must leave, now that her husband Patrick—the kind who cooks, throws her birthday parties, who loves her and has only ever wanted her to be happy—has just moved out.