As ace detectives with advanced hacking, deciphering, and tech skills, Ava and Carol have come a long way in their mission to save the day. Now faced with mysteries even more sinister and complicated than ever before, these two face off against some vile villains and holiday heels. From deep within the heart of the Amazon, to their own front doors, evil seems to be everywhere, and it's no match for ! Journey to some of the most exciting and interesting locations yet, as you take this mystery machine on the road! Learn all new techniques for solving crimes as you grow from gumshoe to ace investigator alongside Ava, Carol, and friends. The time has come to take up the case once again! Are you in, detective? Outwit outlaws, bag some bandits, and uncover secrets of the past as you jump from one mystery to the next in this third bundle set in the hit series. Aide your favorite detective duo in three all-new action-packed adventures that are sure to delight! Adventure, mystery, and the following three titles: ◆ The Curse of the Red Devil ◆ The Witch's Secret (A Halloween Story) ◆ The Christmas Thief