Despite being mentioned as early as first season's "Dear Doctor", Dr. Jeremy Lucas makes his first appearance in this episode.

This episode received the 2005 Emmy nomination for Outstanding Stunt Coordination.

Richard Riehle also played the "Fair Haven" character Seamus McGinty on Star Trek Voyager.

Scott Bakula (Captain Jonathan Archer) and Richard Riehle (Dr. Jeremy Lucas) previously appeared in the "Quantum Leap" episodes 'Play It Again, Seymour - April 14, 1953' and 'Leaping in Without a Net - November 18, 1958'. They played Dr. Samuel 'Sam' Beckett and Lt. Lannon/Clifford Vargas respectively.

Brent Spiner (Dr. Arik Soong) and Richard Riehle (Dr. Jeremy Lucas) previously appeared in the 'Star Trek: The Next Generation' episode, "The Inner Light" together. They played Lt. Commander Data and Batai respectively.