Sheldon and Dr. Sturgis have their first fight when Dr. Sturgis marks a question wrong on Sheldon’s test. Also, Mary takes over for Pastor Jeff when he’s out sick.
Charles and Lizzie meet Goldie, a golden retriever pup who teaches them an important life lesson.
When Dr. Sturgis recommends Sheldon and Missy for a university research study on twins, Mary is unhappy when the test results go to Sheldon’s head.
