A to Z Mysteries: Books A-C: The Absent Author, The Bald Bandit, The Canary Caper;

The Absent Author
A is for author. . . Dink writes to his favorite author, mystery writer Wallis Wallace, and invites him to visit Green Lawn. To Dink’s amazement, Wallace says he’ll come! But when the big day arrives, Wallace is nowhere to be found. The police think he just missed his plane, but Dink suspects foul play. It’s up to Dink and his two best friends, Josh and Ruth Rose, to find the famous writer—before it’s too late!

The Bald Bandit
B is for Bandit. . . The Green Lawn Savings Bank has been robbed! When a private detective comes to Dink’s door looking for the kid who videotaped the crime, Dink and his friends volunteer to find him. After all, there’s a reward! But tracking down one red-headed kid isn’t so easy, especially if he doesn’t want to be found. Can the trio find that kid—and his tape—before the bandit does? 

The Canary Caper
C is for Canary. . . Dink, Josh, and Ruth Rose get an urgent call from Mrs. Davis. Her canary is missing! The little bird has vanished without a trace, and he’s not the only one. Two other pets are missing. The kids suspect a pet-napper, and now that Ruth Rose’s cat, Tiger, has turned up missing too, it’s become personal!