When scatterbrained millionairess Kiz Bouchet (Kathleen Crowley) insists that somebody is trying to murder her, Beau Maverick (Roger Moore) is convinced that the girl is out of her mind. But he soon comes to believe Kiz's story--and in so doing, he tries to thwart a scheme hatched by the girl's cousin (Peggy McCay) and a crooked doctor (Tristam Coffin) to cheat Kiz out of her inheritance. Devotees of humorist Mark Twain will get a chuckle out of the character name bestowed upon supporting actor Whit Bissell. ~ Hal Erickson, Rovi