A map of secret passages in “Lost Canyon” leads to murder.Original Air Date: February 12, 1950Host: Andrew RhynesShow: Hopalong CassidyPhone: (707) 98 OTRDW (6-8739) Stars:• William Boyd (Hopalong Cassidy)• Andy Clyde (California Carlson)Writers:• John BarclayCreator:• Clarence MulfordProducer:• Walter White Jr.Music:• Albert Glaser