Nancy Drew is nearly synonymous with juvenile mystery fiction. The classic children's books written under the pseudonym Carolyn Keene have remained influential over 80 years since their first publication.
Nancy is a teenager who helps her father solve mysteries. That's because her father, Carson Drew, is an attorney, who often needs help with his cases.
Carson is a widower, widely respected in their town and deeply devoted to his daughter. Depending on the version of the Drew family, he was once a prosecutor and now handles cases in private practice. He trusts her judgment and protects her when she's in trouble--of course, she's helped rescue him from danger on more than one occasion, too. (Apparently, kidnapping a lawyer is a thing.) He travels often for work, and his practice doesn't simply involve criminal work--his handling of estates is a recurring practice in the book.
Several film and television adaptations have been attempted, but none very successful, including the 2007 film adaptation featuring Tate Donovan, as seen above. But the legacy of this father in juvenile fiction makes him the Fictional Attorney of the Month.