A cunning thief is desperate to wreck the opening of a historic landmark -- and Nancy is his target! On Gramercy Park in New York City, the magnificent Van Hoog

Volunteering on a hospital ship that brings medical care to South America, Nancy begins to suspect that someone is using the ship to transport illegal cargo and

A cunning thief is desperate to wreck the opening of a historic landmark -- and Nancy is his target! #160

When Nancy goes stargazing, she catches a comet of an adventure by the tail! Nancy and George are thrilled when Bob “Dr. Stars” Steller, a cool astronomer w

Katie Firestone, champion kayaker and owner of a whale-watching tour boat, has invited George, along with Nancy, Ned, and Bess, to vacation north of San Francis