I love the homage to Crimson Tide at the beginning of this episode, with the captain calling out to Weps, who was the name of a character in Crimson Tide. Congratulations to the camera crew for capturing the realism of an obsessive-compulsive ex-SFPD detective solving a murder in a submarine. Casper Van Dien, who was married to Catherine Oxenberg, makes a guest appearance in this gripping episode.