Lesley DeHaan was an assistant production coordinator on Supernatural from Seasons 1-5. She appeared, as did many of the crwe in the spoof epsiode 2.18 Hollywood Babylon. She also makes an appearance in the Gag Reeel on the Season 5 DVD
Lesley was known to Sueprnatural fandom under the pseudonym "vancouvernights". Following the beginning of the Supernatural Postcard Campaigns in 2007, she made contact with the Spn Postcards and sent pictures of the postcards from the production office and commented to say how thrilled the cast and crew were with the postcards. She continued to provide photos of the postcards through to the end of Season5.
In June 2010, she announced she was leaving Supernatural to work on a new series - The Killings - and revealed her "true identity".