The "A" story is that a con man is doing very well, but when he's arrested as he's fleeing, there's nothing of value in his suitcase. The "B" story is that one of the cops working with them, who Mary Beth has known since academy days, is beating his wife.

(Also given to me as ""Incest."") A girl says that their father is molesting the younger daughter, who is too young to testify. How does she know? Because she was molested herself. Cagney and Lacey get the children away from their parents, but have to split up the girls to do so.