The Password to Larkspur Lane delphiniums when a mysterious carrier pigeon lands in her yard. Nancy contacts the registry for the carrier pigeon. Meanwhile, housekeeper Hannah Gruen takes a fall and must be treated at the local orthopedist's office. Her attending physician, Dr. Spires, confides to Carson Drew and Nancy that he was forced to tend an elderly woman for her shoulder under peculiar circumstances: the driver of a car blindfolded him when they drove him there, so he wouldn't be able to guess her location, but the doctor believes their destination might have been someplace called Larkspur Lane. Events led him to believe the
Larkspur, California the same site. This school will serve neighborhoods currently served by Neil Cummins Elementary, mostly to the west of Highway 101, and new developments in the area. The Tamalpais Union High School District comprises five high schools that serve the region. Larkspur, California Larkspur is a city in Marin County, California, United States. Larkspur is located south of San Rafael, at an elevation of . As of the 2010 Census, the city's population was 11,926. Larkspur is located north of San Francisco near Mount Tamalpais. Larkspur's Police Department is shared with that of the neighboring Corte Madera and town of