All 5 "impossible crime"/locked-room mystery novels by James Scott Byrnside are on sale for $0.99 each through the month of January.
The titles are:
Goodnight Irene
The Opening Night Murders
The Strange Case of the Barrington Hills Vampire
The 5 False Suicides
Monkey See, Monkey Murder
These are Golden Age throwbacks and, with the exception of
The 5 False Suicides, all feature Private Detective Rowan Mallory and his assistant Walter Williams.
Author's page at Amazon US:
https://www.amazon.com/stores/James-...hor/B07CDQR8J3