This Isn't What It Looks Like

The fourth book in the 'Secret' series, 'This Isn't What It Looks Like' continues the adventures of Cass and Max-Ernest as they try to solve the mystery of the Secret and the Time Travel Potion. Cass, who has tasted the potion, is trapped in the past, leaving Max-Ernest to rescue her. But as they delve deeper, they discover more about the Secret and its ties to their own families.