Sam uses the alias "Detective Collins" to which costar Misha Collins responded on Twitter. Collins tweeted: @mishacollins: Hey @jarpad, don't u feel like a total f-ing badass when u call yourself agent "Collins?" Don't u just feel so GodDamn cool all the sudden? Jared replied by saying he felt like he was "overcompensating for something".
There is actually a Lizzie Borden Bed and Breakfast in the home of the axe murders.
Sam and Dean use the aliases Agents Collins and Gabriel. Phil Collins and Peter Gabriel were members of the band Genesis.
The house used for the exterior shots is not the real Lizzie Borden Bed and Breakfast. It does not even resemble it. But a photo of the real house can be seen on the back of a pamphlet that Dean picks up in the lobby.