Family is Family

Muldoon is tasked by his Aunt Kay to find the person behind his uncle, Mr. O's murder. Mr. O's son, Sean O'Bannon, also a Public Morals officer, starts a romance with best friend Duffy's sister, Deirdre. Shea gets a taste of the fun side of working in Plainclothes when Bullman takes him to a private, illegal casino.