Book 1
S.O.S.: Society of Substitutes #1: The Great Escape
Alan Katz
Book 2
S.O.S.: Society of Substitutes #2: The Zoo Switcheroo
Alan Katz
Book 3
S.O.S.: Society of Substitutes #3: Food Fight!
Alan Katz
Book 4
S.O.S.: Society of Substitutes #4: Super Fun World
Alan Katz
Book 5
S.O.S.: Society of Substitutes #5: Frenemies
Alan Katz