The conclusion to the Perfect Mystery Trilogy. Still in NYC, Nancy is being held hostage by some unsavoury characters at Pretty Face Cosmetics after uncovering the secret behind their product. Her friends, George and Bess, are doing everything they can to try and find Nancy, but time is running out. Can Nancy make it back to the pageant so she can reveal Pretty Face's terrible secret… before it's too late for the next Miss Pretty Face, and millions of other girls!