Bad Blood is a Canadian crime drama television series created and produced by Simon Barry. The show premiered on Citytv on September 21, 2017. The series ran for two seasons totaling 14 episodes until November 29, 2018. A French-language version of the show premiered on November 11, 2017 on Ici Radio-Canada Télé under the title Les liens du sang. Initially intended as a miniseries, it was renewed by Rogers Media for a second season in March 2018, which was broadcast on Citytv and FX Canada. The first season is a dramatization of the rise and fall of the real-life Rizzuto crime family, a Montreal-based organized crime family, and is based on the 2015 book Business or Blood: Mafia Boss Vito Rizzuto's Last War by Antonio Nicaso and Peter Edwards. The second season departs from the book and is fully fictional.

Antonio Nicaso is an Italian author, university professor, researcher, speaker and consultant to governments and law-enforcement agencies originally from Caulonia, Calabria, Italy, now based in Toronto, Ontario, Canada. He is an expert on the Calabrian mafia. Nicaso lives and works in North America. He teaches courses on "Social History of Organized Crime in Canada" and "Mafia Culture and the Power of Symbols, Rituals and Myth" at Queen's University, in Kingston, Ontario. He also teaches at St. Jerome's University in Waterloo, Ontario and the Italian School of Middlebury College in Oakland, California in the United States and is the co-director of the Research in Forensic Semiotics Unit at Victoria College.