Ray Speltzer's affinity for mazes and bull symbols show parallels from Greek mythology. In Greek mythology the Minotaur is a creature with the head of a bull and the body of a man. The Minotaur dwelt at the center of the Labyrinth, which was an elaborate maze-like construction built to contain it.
Isaac refers to Nadezhda Obukhova as having died just before he was born. Obukhova did in fact pass away in 1961, three years before the birth of Ray Stevenson.
"Buck the System" introduces Yvonne Strahovski (Hannah McKay). Strahovski and C.S. Lee (Masuka) were both on Chuck (2007).
To justify his killings, Dexter contends toward his sister that the legal system does not work as well as Debra thinks. "Dad knew that. Dad taught me that!" What both neglect to mention at this juncture is that the legal system in the 21st century works a lot better than in the days when Dexter's father was on police duty in the 1970s, in large part because of the advancements in Dexter's very own profession of forensics.