David A. Kelly

Mike and Kate are excited to spend the day at the Milwaukee Brewers’ stadium, ready for baseball, bratwurst, and fun. But just before the game begins, the team’s beloved Racing Sausages vanish without a trace.

Mike Walsh and Kate Hopkins are super-lucky. They have tickets to the Boston Red Sox game and all-access passes to Fenway Park....

Ballpark Mysteries are the all-star matchup of fun sleuthing and baseball action. Each Ballpark Mystery also features Dugout Notes, with more amazing baseball facts....

The kids of Cooperstown made it to the World Series! Technically, Mike and Kate are just there to support their friend, Colin, and his teammates as they play for the championship. But the competition gets tricky when someone starts trying to sabotage Cooperstown's team....

Mike and Kate travel to Minneapolis to meet the Minnesota Twins' star players: Marco and Pedro, a dynamic twin duo known for their signature triple plays. But after a water-balloon attack on the players and a suspect on the run, questions start to pile up....

The A-team takes A-Town! Mike and Kate are in Atlanta, where Hammerin' Hank hit his legendary 715th home run. But Hank's historic bat and ball, which he used to break Babe Ruth's record, have been stolen! Good thing Mike and Kate are sleuthing pros....

Red Sox versus Cubs. Game five. It looks like Mike and Kate are about to watch the Cubs win it all. But then someone starts messing with the team....

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....

Mike and Kate arrive in Colorado to a ballpark covered in snow! Luckily, the stadium has a heater that can melt the fluffy flakes in time for next day's game....

This collection includes: Ballpark Mysteries #6: The Wrigley Riddle: Ivy-covered walls--they're the most famous part of the Chicago Cubs' historic ballpark, Wrigley Field....

Thanks to Kate's mom, a sports reporter, cousins Mike Walsh and Kate Hopkins have tickets to the Red Sox game and All Access passes to Fenway Park. But as they're watching batting practice before the game, the lucky bat of Red Sox star slugger Big D is stolen....

Mike and Kate are in for an extra special treat! Two hometown baseball teams in one city! A Subway Series is when the New York Mets play the New York Yankees, and Mike and Kate can't wait to watch all the action! But someone is playing pranks at both ballparks....

Score big with another action-packed Football Mystery from David A. Kelly, starring Mike and Kate! This time, they’re in Boston to tackle an exciting New England Patriots case!

It's spring break and Kate and Mike are off to Los Angeles to visit Kate's dad, a scout for the Dodgers. But all is not sunny in L.A....

It’s a football mystery set in Texas! Mike Walsh and Kate Hopkins are visiting the Dallas Cowboys' stadium, but someone has just handed Carlos, the Cowboys' star quarterback, a threatening note. Soon after, a mysterious figure takes aim at them with a football....

Mike and Kate are about to face their biggest, most important mystery yet! Why? It involves the president of the United States! The president’s brother is a catcher on the Nationals baseball team, and someone is stealing his equipment....

In this festive chapter book, Mike and Kate get the BEST Christmas present ever - a mystery at the Baseball Hall of Fame....

Why is a black cat haunting the New York Mets? Kate and Mike arrive in New York for a big game against the Chicago Cubs, but Cookie, the team’s star hitter, is rattled by a phantom feline. Without a win at that night’s game, the Mets’ season might be over....

Before a game at the Astros' ballpark, Mike and Kate get to meet astronaut commander Nick Rice at the Houston Space Center. He's planning to display a very rare moon rock at an autographing event....

Ivy-covered walls--they're the most famous part of the Chicago Cubs' historic ballpark, Wrigley Field. Mike and Kate can't wait to get down on the field to see the ivy for themselves....