The Backwing Puzzle

A married couple asks Frank and Joe for help with a mysterious, black-winged ghost that has been seen flying outside their home and the eerie voice of a dead slave trader. Also, they help their father track down thieves targetting high-tech companies. For fans of the series who don't like when the Hardys travel everywhere to solve the mystery; this book takes place solely in Bayport. Many of the characters from the lower volumes appear in this book, Mr. & Mrs. Hardy, Aunt Gertrude, Chet, Biff, Tony, Phil, Sam Radley, Jack Wayne, Callie and Iola, and they play more prominent roles, too, instead of being mentioned once and thats it, like in many of the higher volumes. The plot is interesting and while the action in the first half of the book is a little light, the second half makes up for that.

There's never been a REAL ghost in a Hardy Boys book before this. Could this one be real?

There's been ghosts in Hardy Boys books before this. So far they've all been fake ghosts. So I doubt that it changes now...

Occasionally there's a "ghost" in Hardy Boys books. They never end up being real ghosts, so why is there another one? Could it possibly be a real ghost?