Six-year-old Eloise loves to take a bath, which is bad news for Mr. Salomone and the elegant people gathering below in the Plaza's Grand Ball Room for the charity event of the season, a Masked Ball.

The Thea Sisters are headed to Venice, Italy! They'll be there for the Carnival, an annual festival that's famouse for its elaborate masks. The mouselets love exploring the city's bridges and canals, and seeing the beautiful costumes mice wear to Carnival celebrations. But a mysterious thief strikes while they are there!

Librarian Phoebe O'Dunn deals in stories, but her passion for history has taught her that happy endings are rare. Her life in Knights Bridge, Massachusetts, is safe and uneventful until she discovers the hidden room. Among its secrets is a cache of vintage clothing, including a spectacular gown perfect for a gala masquerade in Boston. In the guise of a princess, Phoebe is captivated by a handsome swashbuckler who's also adopted a more daring persona....

When the mysterious letter arrives by courier, Valerie Cooper doesn't know what to make of it. She's become the beneficiary of her late husband's estranged uncle's will - a man she never knew - and inherited a majority partnership in the family's company, New Orleans Fine Antiques. When a wealthy local businesswoman is found dead with a jewelled dagger sticking out of her chest at a masquerade, Valerie is pushed into investigating Collette's business...