A Complete Guide to Reese Witherspoon's Hello Sunshine Book Club Picks

"Northern Spy" by Flynn Berry ($18)

• What it's about: Taking place in Belfast, this mystery focuses on a new mom named Tessa whose sister is accused of being a part of a revolutionary political movement. As Tessa begins to learn more about her sister's identity, she finds herself caught up in a far more complicated mystery than she could've guessed.
• What Witherspoon says: "Set in Ireland, this story explores a world of secrets and lies that tear two sisters apart. Following a pitfall with the IRA, one sister is framed for espionage while the other is forced to choose between protecting her loved ones or facing unimaginable consequences."