Ηθοποιοί επεισοδίου
Roy ScheiderCaptain Nathan Bridger
Jonathan BrandisLucas Wolenczak
Stephanie BeachamDr. Kristin Westphalen
Don FranklinCommander Jonathan Ford
Stacy HaidukLieutenant Commander Katherine Hitchcock
Ted RaimiLieutenant Tim O'Neill
John D'AquinoLt. Benjamin Krieg
Royce D. ApplegateChief Manilow Crocker
Marco SanchezSensor Chief Miguel Ortiz
Φρανκ ΓουέλκερDarwin (voice)
Alan ScarfeDr. Rubin Zellar
Mark FauserWeapons Officer Phillips
Timothy OmundsonDr. Joshua Levin
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Jodi Lyn BrocktonOfficer Wilson