"The Brand of Silence" by Harrington Strong is a detective novel in the public domain which is a more modern novel, and contains hardly any elements of the classic detective or mystery novels (like closed-room, a sudden death, various suspects, footprints, deserted houses, strange noises in the night, a conclusive deduction leading to the resolution etc.). Instead, the novel is set in the busy, quirky Manhattan of the early 20th century, involves conspiracy, influential businessmen, brawls and abductions and ambushes.
The story is mostly quite interesting, since the actual resolution of the mysterious conspiracy about the main character is only revealed in the last chapter. On the other hand, it was not overly thrilling that you wouldn't be able to interrupt reading. Also, I rather prefer the classic, more mysterious detective novels. I therefore gave 3 stars (liked it).