Dark Revenge — Rex Stout

What's a lawyer to do when beautiful Delia Brand confesses of her plans to kill Dan Jackson and Jackson soon turns up dead. Accused of murdering him with her father's .38 in the town of Cody, Wyoming, Delia Brand sets out to find the real killer, and along the way, discovers the truth about her father's unsolved murder. Dark Revenge was first published in 1939. Later appeared in an expanded novel version as Mountain Cat and The Mountain Cat Murders.