When Bonanza debuted in 1959, its first episode was "A Rose for Lotta", guest-starring Yvonne DeCarlo as real-life musical peformer Lotta Crabtree. Written by Stanley Roberts, the series' March 1, 1970 episode "Return Engagement" found Sally Kellerman in the role of the fabulous Lotta. As indicated by the title, Ms. Crabtree has once again honored Virginia City with a visit, and both Joe and Hoss Cartwright are swept off their feet by the glamorous actress (Joe even begins entertaining notions of pursuing a stage career himself!) Things take a sinister turn when Lotta's leading man is killed and Hoss is accused of the crime. Joyce Bulifant, who later played Marie Slaughter on The Mary Tyler Moore Show, appears as Bonnie. ~ Hal Erickson, Rovi