Characters in The Secret in the Old Attic

Nancy Drew

Also in The Secret of the Old Clock, The Hidden Staircase, The Bungalow Mystery, Together with the Hardy Boys, The Mystery at Lilac Inn, The Secret at Shadow Ranch, The Secret of Red Gate Farm, The Clue in the Diary, Nancy Drew, Girl Detective, Nancy's Mysterious Letter

Carson Drew

Also in The Secret of the Old Clock, The Hidden Staircase, The Mystery at Lilac Inn, The Secret at Shadow Ranch, The Secret of Red Gate Farm, Password to Larkspur Lane, The Message in the Hollow Oak, The Clue of the Tapping Heels, The Mystery of the Brass Bound Trunk, The mystery at the moss-covered mansion

Bess Marvin

Also in The Secret of Red Gate Farm, The Message in the Hollow Oak, The Haunted Bridge, The Clue of the Tapping Heels, The Mystery of the Brass Bound Trunk, The clue in the jewel box, The Mystery of the Tolling Bell, April Fools Day, The Clue of the Leaning Chimney, The Secret of the Wooden Lady

George Fayne

Also in The Secret of Red Gate Farm, The Message in the Hollow Oak, The Haunted Bridge, The Clue of the Tapping Heels, The Mystery of the Brass Bound Trunk, The clue in the jewel box, The Mystery of the Tolling Bell, April Fools Day, The Clue of the Leaning Chimney, The Secret of the Wooden Lady

Hannah Gruen

Also in The Secret of the Old Clock, The Hidden Staircase, The Bungalow Mystery, The Mystery at Lilac Inn, The Secret at Shadow Ranch, Password to Larkspur Lane, The Message in the Hollow Oak, The Clue of the Tapping Heels, The Mystery of the Brass Bound Trunk, The Clue of the Leaning Chimney

Effie Schneider

Also in Password to Larkspur Lane, The Mystery of the Brass Bound Trunk

Philip March (Nancy Drew)

Susan March

Horace Lally