Answer:
Frank Hardy
Joe Hardy
Fenton Hardy
Laura Hardy
Aunt Gertrude
Chet Morton
Iola Morton
Biff Hooper
Tony Prito
Callie Shaw
Phil Cohen
Chief Ezra Collig
Sam Radley
Ethel Radley
Jerry Gilroy
Jack Wayne
Vanessa Bender
Belinda Conrad
The Gray Man
Samuel Peterson
Brian Conrad
Mrs. Conrad
Adam Franklin
Q. T.
Mimi Morton
Step-by-step explanation: