Cousins Mike and Kate investigate after someone threatens to tamper with the scoreboard right before the Colorado Rockies' season opener.

Cousins Kate and Mike visit Kate's father, a baseball scout for the Dodgers, in Los Angeles just as a series of suspicious events lead him to think that someone is trying to steal his scouting reports.

Cousins Mike and Kate are at Boston's Fenway Park when the Red Sox's star hitter discovers that his lucky baseball bat has been stolen.

Next up to the plate—book #5 in our early chapter book mystery series, where each book is set in a different American ballpark!
The stars are out in Kansas City . . . the baseball stars, that is! Mike and Kate are at the All-Star game, and even get to go on the field during the Home Run Derby to catch pop-ups! That's where they meet Andy, whose dad, Josh Robinson, is an All-Star catcher. But before the Home Derby ends, Josh finds...

Mike and Kate must solve a mystery during a World Series between the Cubs and the Red Sox when someone starts ruining equipment, getting players in trouble, and even stirring up an old baseball curse.

Lena Blackburne loved baseball. He watched it, he played it, he coached it. But he didn't love the ways players broke in new baseballs. Tired of soggy, blackened, stinky baseballs, he found a better way. Thanks to a well-timed fishing trip and a top-secret mud recipe, Lena Blackburne Baseball Rubbing Mud was born. For seventy-five years, baseball teams have used Lena's magic mud to prepare baseballs before every game. Read the story of how Lena's...

Mike and Kate are volunteering in Cooperstown, helping wrap gifts for needy families, when a very valuable baseball card disappears, and they have a new mystery to solve.

"Babe Ruth's baseball glove goes missing before a Baltimore Orioles game. It's up to cousins Mike and Kate to find its whereabouts"--

"Kate and Mike arrive in Texas to find that someone wants Carlos gone. Soon after, a mysterious figure takes aim at them with a football. Can Kate and Mike discover who's out to get the Cowboy's star quarterback before the big game?"

"Kate and Mike arrive in Birmingham, Alabama at Rickwood Field for a Juneteenth MLB game, but someone steals a Satchel Paige baseball. Can they discover who stole the ball before the big game?"--from the Publisher.