David A. Kelly

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

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....

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....

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....

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....

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....

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

Someone is blackmailing the Detroit Tigers’ famous slugger, Tony! They’ve stolen his favorite trophy, and unless he fills a tiger-shaped bag with signed baseballs, he’ll never see the trophy again. Luckily, all-star sleuths Mike and Kate are ready to pounce on the case....

Mike and Kate are very excited to watch a Texas Rangers game. Mike even bought an official shirt. But little did he know - it’s a fake! A sneaky crook is tricking Rangers fans into buying the wrong shirts. Can the cousins help a real-life police ranger round up the culprit? Find out....

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....

It's a special day in St. Louis, and there's a pregame celebration with Clydesdale horses that drive around the edge of the stadium before the game. Mike and Kate get to meet the horses and the Dalmatian that rides along. Then, during the game, they find out the Dalmatian is missing....

Mike and Kate's next mystery is legendary! The great pitching legend Babe Ruth's first team was in Baltimore, so the Orioles' ballpark has one of his gloves on display. While Mike and Kate are eating pancakes with the Orioles' pitcher, the glove goes missing....

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....

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 MVP club wants to save an old field house close to their school. They could turn it into their very own sports center! Luckily, a famous soccer star is coming to town and wants to help....

Five friends are ready for their school's Olympics field day. There will be relay races, archery contests, and more! But not everyone wants to play fair - someone is trying to ruin the events....

Mike and Kate can't wait to watch their rookie hero, Dusty Martin, in action. But something is throwing the Blue Jays' star off his game....

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....