What's the Name of That Book??? discussion

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New Waves
SOLVED: Adult Fiction
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SOLVED. New Fiction Novel about two coworkers (Asian man and African-American woman). One day the woman goes missing and the man tries to find her, only to realize perhaps he never really knew who she was outside of the work place. [s]
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The book cover showed a non-descript office setting with two people sitting at neighboring desks, no facial features if I remember.
I had it written on a post-it but lost that and I am wracking my brain trying to figure out what the name of this book is!