S04E03: Strangers

Angela and Lance team up against Chase in the FAA's investigation of the crash. Angela bribes Buzz Whitehead, the airplane mechanic, to lie and claim that Chase had been drinking prior to the flight and had ignored the fuel leak warning. Chase is determined to discover who sabotaged the plane and swears that if the cartel was involved, Richard will pay. Gustav arrives in Tuscany Valley to obtain the Falcon Crest secret. Angela, Lance and Greg plot to take The Globe from Richard. Maggie's father, Paul Hartford, arrives for a visit. The Giobertis throw a party to introduce their new champagne, but the celebration turns into a nightmare for Maggie when Angela reveals that Maggie is adopted and her father is unable to deny the painful truth.