Cassie, the youngest of six Wilton daughters, is bold, bright, and ready to enter society. There's only one problem: her older sister Lenora, whose shyness keeps her away from many social events, is now entering her third season. By their father's decree, Cassie has no choice but to wait her turn. Evan Glenside, a soft-spoken, East London clerk, has just been named his great-uncle's heir. A chance meeting between Evan and Lenora promises to change everything . . . so Cassie begins to write Mr. Glenside letters in the name of her sister.