The New Neighbor by Karen Cleveland

Secrets, jealousy, and paranoia collide when a seemingly perfect new family moves into a neighborhood with ties to the CIA in this gripping thriller from the New York Times bestselling author of Need to Know.
"Karen Cleveland ingeniously melds domestic intrigue with the lightning pace of a spy thriller, showing us the devastating personal costs of intelligence work."—Tess Gerritsen, New York Times bestselling author of Listen to Me
ONE OF THE BEST BOOKS OF THE YEAR: PopSugar
Idyllic neighborhood, perfect family, meaningful career. CIA analyst Beth Bradford has it all—
Until she doesn't.
Now, facing an empty nest and a broken marriage, Beth is moving from the cul-de-sac she's long called home, and the CIA is removing her from the case that's long been hers: tracking an elusive Iranian intelligence agent known as The Neighbor.
Madeline Sterling moves into Beth's old house. She has what Beth once had: an adoring husband, three beautiful young children, and the close-knit group of neighbors on the block. Now she has it all. And Beth—who can't stop watching the woman stepping in to her old life—thinks the new neighbor has something else too: ties to Iranian intelligence.
Is Beth just jealous? Paranoid? Or is something more at play?
After all, most of the families on the cul-de-sac have some tie to the CIA. They're all keeping secrets. And they all know more about their neighbors than they should. It would be the perfect place to insert a spy—unless one was there all along.