Define Valentine (sequel to Define Spy)

(semi-long hiatus)

Serena Valentine successfully completed her mission as an undercover student at Summington High school. But in the spy world, there are no happy endings. Instead, questions from the last mission were left unanswered, and Serena is determined to find them. When the Valentine team is assigned a second mission, it is not like anything Serena expects. More questions are added onto the list, making it even more confusing for her to handle. Rules might be bent, and risks will be taken.