A socialite retains Matlock to defend her husband's accused killer, a maid (Theresa Saldana) who won't help her own defense.
Lou is afraid that Mary is becoming addicted to sleeping pills when, after too many sleepless nights, she turns to prescription medication for help.
Glowing humanoids invade the Robinsons' colony in search of a brain to navigate their ship. Their plan is foiled when Will's worry over his parents' safety makes his brain unusable.
Joe becomes the target of a tough and vengeful Kentucky family, after he kills one of them who almost sets the Ponderosa on fire and the Cartwrights take in the dead man's daughter.
Tom and Abby's wedding almost doesn't happen.