The episode featured performances by guest actors Kevin Weisman, Mark Acheson, Minh Ly, Paula Lindberg, Tyler McClendon, and Vincent Tong; previous guest stars Ryan McDonald and Clark Middleton returned as scientist Brandon Fayette and rare bookseller Edward Markham, respectively [REF].
Torv later remarked in a DVD special featurette that "this episode is actually a nice one because I think she's kind of starting to look at these people as more than just a project.