Revisit cases that Detective Agency No. 2 have previously solved in On the Case: The Villains Return. Several mysteries have appeared in the traces of the old cases, and new investigations must begin. Enter the role as detective and get a case file with a total of 19 missions! To find the answers, inspect the investigation material carefully – pictures, traces and explanations must be analyzed. Search for evidence together with Tiril, Oliver and Ocho.