Perry Mason (1957)

S4E3 The Case of the Ill-Fated Faker

Jim Ferris is involved in an illicit relationship with his uncle's young, discontented wife. Together, they devise a plot to swindle $80,000 from the uncle by staging a kidnapping. However, their plan spirals out of control when secretary Betty Wilkins, who is acting as their intermediary, finds herself accused of Jim Ferris's murder.