Blood Ties is a Canadian television series based on the Blood Books by Tanya Huff; the show was created by Peter Mohan. It is set in Toronto, Canada and has a similar premise to an earlier series also set in Toronto, Forever Knight, in which a vampire assists police in dealing with crime. It premiered in the United States on March 11, 2007 on Lifetime Television, and during fall of 2007 on Citytv and Space in Canada. In May 2008, Lifetime declined to renew the series.

In the Yorkshire countryside, working-class tomboy Mona meets the exotic, pampered Tamsin. To seal their friendship, Mona introduces Tamsin to her born-again Christian brother and helps her spy on her adulterous father. Bound together by their secrets, the two girls see their friendship deepen and enter into dangerous waters.