- California Doubling:
- Averted for six seasons, which included shots of Philadelphia that sometimes bordered Scenery Porn. However, the last season was filmed entirely in Los Angeles to reduce production costs.
- Played straight in season 2's Creatures of the Night - the theater showing Rocky Horror was the Rialto Theater in South Pasadena, California.
- The Danza: John Finn plays Lt. John Stillman.
- Fake Russian: Georgian-American Elena Satine as Opera Singer Nadia Koslov.
- Keep Circulating the Tapes: Extensive use of hit music from different eras has made it prohibitively expensive to release on DVD.note It's still heavily shown in syndication in the US at least.
- Recycled Script:
- S3's "Beautiful Little Fool" was remade in practice as S4's "Torn". Both begin with a young woman bringing the case of a long deceased relative, a young woman that was murdered. Both are the team's new record for oldest case reopened, the only case in the series from that decade, and take place in the last year of said decade ("BLF"'s victim is a 1929 flapper, "Torn"'s is a 1919 socialite). In both cases, the clue that solves the crime is provided by an old woman, who was a little girl when the murder was committed, and is the only witness still alive, with every other testimony being provided by books, records, diaries, historians of the era or descendants of the people involved. The perp is long deceased in both (as it could only be realistically) but left a recorded confession. The murder was committed during the arrival of a big historical event that destroyed the fortune of a man related to the victim (a member of the Vanderbilt family that lost his fortune in the Crash of 1929 in "BLF", a beer magnate that went out of business with Prohibition in "Torn").
- The episode "Mindhunters" is very similar to Without a Trace's "Doppelganger"—the detectives discover a Serial Killer and interrogate him relentlessly, only for him to outsmart them and talk in circles around them. They ultimately have no choice but to release him, as they have no real evidence and he hasn't confessed.
- WAT's "White Balance" is similar to CC's "8:03AM", in that they focus on the disappearance/death of a white girl and a black boy, with the white girl's case being considered more important.
- Romance on the Set: Between Kathryn Morris (Rush) and actor Johnny Messner (who played FBI Agent Ryan Cavanaugh in the series' final season). Together since 2010, they also welcomed twin boys in 2013.
- Screwed by the Network:
- A good 70% of episodes start late due to football in the US. They refuse to do anything about it. This is amusing because football fans complain about CBS's obsessive Repeating Ad promos during the games themselves. And if it isn't football, its usually something else...
- Cases that took place during the 2000s became more frequent during the final seasons thanks to budget cuts.
- The last screw driven into this show was cancellation. It's gone for good now.
- Scully Box: Used for teenager Brent Harris in Saving Sammy.
- Spiritual Successor: To Without a Trace, which premiered a year before. Despite the two shows being at the polar opposites of criminal investigation—in WAT, there's tremendous urgency to find the presumably still-alive victim before he/she is killed, whereas in CC, the victim has been dead for years if not decades before the team takes on the case, they followed a very similar format, likely because they were both created by Jerry Bruckheimer and part of the CSI Verse—an opening sequence in which we meet the victim and get a hint of what led to their disappearance/death, victim disappears/is seen dead, the cops are brought in, we get numerous interviews with friends and family that lead to flashbacks (with virtually identical effects) that start to spell out what happened culminating in one that finally tells us everything, then the victim is found dead or alive/killer is found and we get a final montage of the cops and the victim's loved ones. Additionally, both shows have a Hispanic detective and a blond female detective.
- What Could Have Been:
- Silas Weir Mitchell, who guest starred in two episodes, was considered for the role of Detective Vera.
- The season three episode, "Detention" (where the victim was mourning the death of Kurt Cobain) was to be a solo artist episode featuring only the music of Nirvana, but the show was unable to get clearance to use it. They were eventually given the rights by the season five premiere, "Thrill Kill", which ended up getting all the Nirvana music (and interestingly enough, also takes place in 1994.)
Trivia / Cold Case