Nancy Drew Files Deep Secrets Mixed Signals Case 63 Carolyn Keene Paperbacks 2pc Nancy Drew Files paperback and hardback collection includes 'Deep Secrets' and 'Case 63: Mixed Signals' by Carolyn Keene. These Archway Paperbacks from the early 1990s offer classic teen mystery and suspense. 'Deep Secrets' features a beachside mystery involving a missing executive's daughter, while 'Mixed Signals' follows Nancy as she investigates threats on a college campus during homecoming weekend. Both books showcase the iconic retro cover art characteristic of the series. Please note that as preowned vintage items, they may have a slight old smell from storage. #Vintage #Retro #90s