
The Sinister Mark
Author: Lee Thayer
Narrator: Martha H. Weller
Unabridged: 7 hr 19 min
Format: Digital Audiobook Download
Publisher: Martha H. Weller
Published: 04/14/2026
Categories: Fiction, Mystery & Detective, Romance, Historical Fiction

Author: Lee Thayer
Narrator: Martha H. Weller
Unabridged: 7 hr 19 min
Format: Digital Audiobook Download
Publisher: Martha H. Weller
Published: 04/14/2026
Categories: Fiction, Mystery & Detective, Romance, Historical Fiction
Lee Thayer is a pseudonym for Emma Redington Thayer (1874–1973). Thayer studied art and design and worked notably as an interior decorator. She was a prolific American writer of the twentieth century, writing over sixty mystery novels starring Peter Clancy, a well-mannered private investigator. She introduced Clancy in her first murder mystery, The Mystery of the Thirteenth Floor, published in 1919. She is noted for writing engaging stories that are devoid of violent or sexual content.
Martha H. Weller has long been a fan of audio books, both as a listener and a reader with works on Audible and Librivox. She has a doctorate in French and also has a strong technical background in computer-based training and computer programming. Since her retirement from the University of Illinois (Urbana), she has had time to devote to her other passions as well: crafts and music.