19 books • 2 series
Book #1: Case of the Murder at Fairfield Heights
Book #2: Case of the Smiling Corpse
Book #3: Case of the Man who Refused to Die
Book #4: Case of the Gathering of Killers
Book #6: Case of the Restless Crossbow
Book #7: The Case of the Gypsy Curse
Book #8: Case of the Clairvoyant Kid
Book #9: Case of the Cryptogram Murders
Book #10: Case of the Murders at Terrapin Island