Continuity: In the Season 1, Episode "Father Knows Best," Dexter goes to the morgue to see the body of his father. When he first sees the body, he bends down, and the clock behind him reads 4:11. A moment later when he stands back up the clock is at 4:17.

Continuity: In Season 1, Episode 1, "Dexter": The door to Dexter's apartment opens out toward the walkway. However, in all subsequent episodes the door opens into his apartment.

Continuity: In Season 1, Episode 8, "Shrink Wrap": The Ice-Truck Killer is responding to Dexter's Craigslist submission. The reply-to e-mail address is frozenbarbie@hotmail.web, but when in the new window that popped up when the ITK hit "Reply" the address is frozenbarbie@hotmail.com.

Other: Series 1, Episode 2: "Crocodile". When Dexter is running Matt Chambers' fingerprint though his computer, he brings up four newspaper articles where the names Matt Brewster and Matt Rasmussen are used. In the final article, the headline reads "Matt Rasmussen of South Boston arrested", but the body of the article uses the name Matt Brewster exclusively. Other than the first few words, the text of the final article is identical to that of the previous one.