Occasionally, both Jonathan and Mark lost faith in God but they always found a way back to their mission. Once, the Devil himself interfered with Mark when he accidentally ran over a girl. In his frenzy, Mark mistakenly sells his soul to Satan in exchange for the girl's life. But through a little slight of hand, Jonathan manages to retrieve the "contract" and resume their mission on earth.

Jonathan, too, made mistakes. Once he used his angelic powers to lash out at some bullies and lost his job for a time, until Mark's good deeds helped Jonathan get reinstated. And when Jonathan learns his wife, Jane Gordon is dying, he hates God after He fails to reunite him with his wife in death. But God had a plan and Jonathan soon dealt with his disappointment and like a good, obedient angel, he continued to travel down that "Highway to Heaven."

TRIVIA NOTE: Born Eugene Maurice Orowitz on October 31, 1936 in Forest Hills, Queens, New York, actor Michael Landon grew up in Southern New Jersey (Collingswood), and graduated from Collingswood High School in 1954. He won a javelin throwing scholarship to USC but when a torn ligament injury forced him to lose the scholarship, he turned his eyes towards acting. One of his early roles was a werewolf in the now cult classic film I Was A Teenage Werewolf (1957). He soon gained major success as the rebellious, Little Joe Cartwright on the western BONANZA/NBC/1959-73 and followed that success with the western drama LITTLE HOUSE ON THE PRAIRIE/NBC/1974-82 and the fantasy drama HIGHWAY TO HEAVEN/NBC/1984-89. When Landon realized he had cancer, he made a visit to THE TONIGHT SHOW starring Johnny Carson (a life long friend) and very graciously summed up his condition. Surrounded by family and friends, Landon died of pancreatic cancer on July 1, 1991 in Malibu, California. He is buried  at Hillside Memorial Park, Culver City, California. Landon's Irish Catholic mother, Peggy Landon had committed suicide in 1974.

Victor French was born December 4, 1934 in Santa Barbara, California. Known for his "bad guy" persona in the western films, French began to play more sensitive roles in his later TV career.  In 1977 French played Roy Mobey, a loveable redneck police chief  from Clinton Corners, Georgia in his own sitcom CARTER COUNTRY/ABC/1977-79. French died of lung cancer on June 15, 1989 after filming the last episode of HIGHWAY TO HEAVEN. Both he and Landon had been friends from their days on the "Prairie" when he played the character Mr. Isaiah Edwards. French was inducted into the Hall of Great Western Performers of the National Cowboy and Western Heritage Museum in 1998.