The German title for this episode is "Das kalte Herz" ("The Cold Heart").
When Nick looks at the organ transplant waiting list, several of the patient names listed are those of crew members on the show, including Jacques Bradette (production designer), Michael Crain (assistant director), Bert Dunk (director of photography), Katharine Gray (story dept. co-ordinator), Dusan Kovacevic (driver), Catherine Taylor (script supervisor) and David Vaughn (assistant director).
In "Hunters", Nick, LaCroix, and Janette ride cross-country to escape vampire hunters, and have no trouble controlling their horses.
This episode suggests a new piece of vampire lore: that horses get spooked when near vampires. However, in the flashback scenes of a number of previous episodes, vampires have no difficulty controlling horses that they ride. In the Season One episode "Hunters", for example, Nick, LaCroix, and Janette are all riding cross-country to escape a posse of vampire hunters. However, although it was almost certainly the scriptwriter's intention to introduce new vampire lore, the information is actually presented by Hans Victor, who thus blames Nick for the accident to Veronica. Nick does not deny the accusation; but then Hans is in no state to accept such a denial, and Nick is prone to guilt. One is free, therefore, to interpret the horses' fear as due to some other cause. It is also possible that Nick, LaCroix and Janette somehow were able to make the horses they were riding comfortable with their presence.
Dr. Valerie Freeman's clinic is located at "Mount Pleasant and Grover". Although the latter (presumably intended to be a minor cross-street) is fictional, Mount Pleasant Road is a major north-south street in central Toronto.
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