Free Kindle Books – Historical Mystery
- Black Danube – A Leo Katz Mystery (Leo Katz Mysteries Book 1) by Nik Grybaski. Price: $0.99. Genre: Historical Mystery Deal of the Day, Sponsor, 1899 Vienna, A young dissident is murdered, his fiancée wrongly accused. Rated: 4 stars on 24 Reviews. 377 pages. ASIN: B08GQ5CNMS.