Pekkanen, a former investigative journalist and author of novels including The Opposite of Me and The Best of Us, teamed up with Greer Hendricks for the riveting romantic thriller, The Wife Between Us. In their second foray, the two use their signature split-narration strategy to follow the increasingly tense game of power and manipulation that binds two women. It starts when Jessica Farris, barely making ends meet in New York, responds to an ad for a psychological study, thinking it’s a way to a fast $500. But the researcher, Dr. Lydia Shields, shocks Jessica with how much she seems to know about her. As Jessica becomes more paranoid, she’s also more vulnerable to Dr. Shields’s manipulation, which may extend even to murder.