Fred wages an all-out war to get rid of Puerto Rican neighbor Julio (Gregory Sierra).
Mary, Laura, and Mr. Edwards' adopted son Carl long to get a first-hand look at the kinds of trains they learn about in school. The kids eventually con their parents into letting them go on a business trip with them. While messing around on a caboose at the train station, the children are in for the ride of their lives when it detaches from the rest of the train and runs loose.
The wife of a prominent physician is arrested for drugging her husband, causing him to crash his private plane. But then he turns up alive, living in Mexico with a beautiful nurse.
A beautiful model leads Perry Mason to a missing heir's racket and murder.
Wally passes his driving test and takes off in the family car, while the rest of the Cleavers sit home worrying.
