The bar that Audrey (as Lexie) works in is the Oatley Tap Room. This is a reference to The Talisman that Stephen King wrote with Peter Straub. It's the dive bar that Jack works at to earn money to continue his travels.
This episode shares a title with The X-Files season 5 episode "Bad Blood", in which Mulder and Scully investigate a death by exsanguination.