The Silent Bullet: Professor Kennedy's Scientific Mysteries Arthur B. Reeve 14 chapters 8 hr 54 min Listen now ↗ — The Silent Bullet: Professor Kennedy's Scientific Mysteries
Against Odds: A Detective's Pursuit Lawrence L. Lynch 36 chapters 10 hr 20 min Listen now ↗ — Against Odds: A Detective's Pursuit
The Chief Legatee: A Wedding Day Mystery Anna Katharine Green 31 chapters 6 hr 56 min Listen now ↗ — The Chief Legatee: A Wedding Day Mystery
The Wishing Well : Penny Parker's Mysteries Mildred A. Wirt Benson 26 chapters 4 hr 36 min Listen now ↗ — The Wishing Well : Penny Parker's Mysteries
Hoofbeats on the Turnpike: The Adventures of Penny Parker Mildred A. Wirt Benson 26 chapters 4 hr 36 min Listen now ↗ — Hoofbeats on the Turnpike: The Adventures of Penny Parker
Danger at the Drawbridge: A Penny Parker Mystery Mildred A. Wirt Benson 26 chapters 4 hr 10 min Listen now ↗ — Danger at the Drawbridge: A Penny Parker Mystery
Saboteurs on the River: A Penny Parker Mystery Mildred A. Wirt Benson 26 chapters 4 hr 11 min Listen now ↗ — Saboteurs on the River: A Penny Parker Mystery
Swamp Island: A Penny Parker Mystery Mildred A. Wirt Benson 26 chapters 4 hr 42 min Listen now ↗ — Swamp Island: A Penny Parker Mystery
The Ghost Beyond the Gate: Penny Parker's Mystery Mildred A. Wirt Benson 26 chapters 4 hr 35 min Listen now ↗ — The Ghost Beyond the Gate: Penny Parker's Mystery
The Secret Pact: A Penny Parker Mystery Mildred A. Wirt Benson 26 chapters 4 hr 22 min Listen now ↗ — The Secret Pact: A Penny Parker Mystery
The Clue: A Fleming Stone Mystery Carolyn Wells 25 chapters 7 hr 58 min Listen now ↗ — The Clue: A Fleming Stone Mystery
The Clue of the Silken Ladder: A Penny Parker Mystery Mildred A. Wirt Benson 26 chapters 4 hr 16 min Listen now ↗ — The Clue of the Silken Ladder: A Penny Parker Mystery
