Johnny Adcock is an aging Major League pitcher with the perfect retirement plan--he moonlights as a private investigator. Major League Baseball, as it turns out, is a prime source of employment for a philosophically inclined, discreet detective who has both the brains and the brawn to handle the unique problems of professional athletes. What sounds like the standard story of a pro athlete's marriage gone sour quickly turns into the most dangerous...

The Aldens help out at a minor league stadium and investigate when it appears someone in the ballpark is stealing the home team pitcher's signals and relaying them to the batters of the other team.

Eighth-grader Molly's ability to throw a knuckleball earns her a spot on the baseball team, which not only helps her feel connected to her recently deceased father, who loved baseball, it helps in other aspects of her life, as well.