Nixon often writes about grandmothers and grandchildren, usually in the mystery genre, such as the grandmother who accused her granddaughter of faking her abduction in The Kidnapping of Christina Lattimore (1979). Other books for young readers have been set on cruise ships. Richard Peck's Those Summer Girls I Never Met (1988) depicts Drew and Steph getting to know their grandmother on a Baltic Cruise. In Cynthia Wall's Disappearing Act (1996), babysitters Kim and Marc use their ham radio skills to rescue a kidnapped toddler. Josh and Tank investigate a mysterious computer disk that a stranger hides in Josh's bag in Lee Roddy's The Case of the Dangerous Cruise (1994). In Gertrude Chandler Warren's Boxcar Children series, the Aldens and their grandfather observe strange events in The Mystery Cruise (1992). Members of the Twelve Candles Club providing child care on a Caribbean Cruise detect drug smuggling in Elaine L. Schulte's...