From blurb: "It's like looking into a mirror, and seeing yourself, except it's not you. It's someone else. -- They were both twelve, though they'd been given different birthdays by accident. The had the same color hair, the same color eyes; they were the same height, though Alice was skinner.".

Through e-mails, letters, blog entries, and movie scripts, twelve-year-old Ruth, an American girl, and Ruby, an English one, discover that they are long-lost twins.

Grace, an only child who was adopted at birth, discovers that she is the middle child in her biological family after she gives up her own child for adoption, and she struggles to find belonging as she tries to bond with her stoic older brother and outspoken younger sister.

"Nora and Ben's younger sister, Birdy, loves to keep secrets. She surprises her family more than once: She hides a kitten in her room. She writes a beautiful poem. One day Birdy watches her mother spit into a tube, ready to send it off to find out more about herself and where her family came from. Birdy spits into a tube, too, when no one sees her. But when the test results come back, there is a surprise. Where did Birdy come from? Nora and Ben must...