The Disappearance Cipher: a coming of age romantic suspense (Dilya's Secret Dog Force #1)
M. L. Buchman

Dilya Stevenson, nanny and dog sitter to the First Family, always trusts herself, her dog, and her mentor—first, second, and third. Everyone else stands outside that circle.
But when her retired-spymaster mentor disappears, Dilya and the First Dog can’t find her alone. To save her mentor’s future, she must reconnect with her own past.
Originally published as a five-story The Race Begins, The Library Trail, The Catalog Message, The Railway Code, The Two-Dog Solution.