• Age: 12 to 18
• Grade: 7 to 12

In her fourth adventure, available in paperback for the first time, Mary Quinn no longer has the Agency to support her — just James Easton.

Though Mary has officially left the Agency, her former superiors have asked her to take on a dangerous case: convicted fraudster Henry Thorold is dying in prison, and Mary must watch for the return of his estranged wife, herself a notorious criminal with a potentially deadly grudge against James Easton, who wants to wed Mary. And Mary can't shake the feeling that a Chinese prizefighter newly arrived in town is somehow familiar. With the stakes higher than ever, can Mary balance family secrets, conflicting loyalties, and professional expertise to bring a criminal to justice and find her own happiness?

Y. S. LEE is an award-winning poet and novelist whose first young-adult novel, A Spy in the House, was nominated for an Agatha Award and won the inaugural John Spray Mystery Award. Ying won the 2022 Foster Poetry Prize, and she published her first chapbook, Exit Permit, in 2023. She lives in Kingston, Ontario, with her family, where she is also an organizer with Kingston WritersFest. Mrs. Nobody is Ying's debut picture book.

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