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 (6.66%) is water. Charles W. Wright laid out the town in 1887. The first post office opened in 1891. Larkspur incorporated in 1908. Larkspur's Downtown Historic District, known also as Old Downtown Larkspur, is a historic district that was listed on the National Register of Historic Places in 1982. The restored Art Deco Lark Theater is part of this downtown district. Scenes in the 1949 film noir "Impact" featured several areas around Larkspur, including the home and gas station of the Probert family, in the location now occupied by The Tavern at Lark Creek. The final scenes of Clint Eastwood's