Love Among the Walnuts — Jean Ferris

Sandy Huntington-Ackerman's life becomes increasingly complicated when his bungling, moneygrubbing uncles try to shanghai the family fortune by poisoning a birthday cake. Luckily, those conniving uncles prove yet again that they can't do anything right. Instead of bumping off the whole family, they put Sandy's mom and dad and their pet chicken into mysterious comas. Sandy joins forces with his loyal butler and a wise and wacky nurse to save his parents and squelch his uncles' felonious high jinks.