Brittany Cavallaro is the New York Times bestselling author of A Study in Charlotte and the Charlotte Holmes mystery novels. With Emily Henry, she wrote the young adult thriller Hello Girls. Cavallaro is also the author of the poetry collections Girl-King and Unhistorical and is the recipient of a National Endowment for the Arts fellowship in poetry. Her most recent novel is Sunrise Nights, a novel in verse written with Jeff Zentner. She lives in Michigan, where she teaches creative writing at Interlochen.