History Series / ATouchOfFrost

* StudentTeacherRomance: Deconstructed in the episode ''Endangered Species'' were a mutual relationship between a student and his female teacher leads to blackmail and the man behind it winding up dead on some unsuspecting family's bed. When Frost uncovers the relationship and interviews the teacher, he makes it apparent that consensual or not, she betrayed the trust the family placed in her school to educate their son.

** Sydney Snell from "House Calls" is a very tragic and unbalanced man. Well into his forties, he still has the mind of a child. Always wanting to be a doctor he ended up breaking into houses, and harmlessly injecting children with water, under the delusion he was in someway helping them. Frost arrested him several years before the events of the episode, and he was promise Psychological help. But he never got it, and was instead thrown in prison, where he was beaten up by the other inmates for being a child abuser. This did nothing to help his fragile sanity. Sydney was very much a kind and quite pitiful man, who never hurt anyone and had no idea what he was doing was wrong. Following being mistaken for murdering two children, he ends up confessing despite being innocent, as he even doesn't understand his actions.

* DeathSeeker: In the aforementioned suicide attempt.

* GriefInducedSplit: It's mentioned near the end of "Held in Trust" that John and Emma Palmer have separated following the abduction, rape and murder of their young son Bobby, even though the police caught the killer. A significant contributing factor is that [[spoiler:John was briefly considered a suspect in the crime, due to him having been previously reported for trying to persuade a young girl to get in his car (his intentions were benevolent) and the family having been investigated for abuse allegations (which was a ruse for the real culprit to get close to the family); a distraught Emma had confronted John about whether he was involved and confessed she didn't know what to believe, with John vehemently defending himself]]. Frost finds the situation tragic yet unsurprising, remarking that it's pretty difficult for a couple to come back from something like that.

* BlamingTheVictim: In the episode "Stranger in the House", a sleazy cab driver says a girl he picked up and then tried to have sex with was asking for it, because she was dressed in skimpy clothes and didn't protest when he started kissing and touching her. When Frost questions why he didn't stop trying to go further when she ''did'' start protesting, the driver says it's "too late" by that point, that she knew what she was getting into and that men [[ImAManICantHelpIt can't control themselves]] in that situation. He backtracks a bit though, when Frost reveals that the girl was only fifteen (the age of consent in the UK is sixteen so even if he wasn't being forceful he would still get prosecuted for statutory rape) and that she was violently raped at knifepoint after fleeing from him. [[spoiler:It turns out the cab driver [[NotMeThisTime wasn't the rapist]], though not from lack of trying, and it's implied he's still going down for AttemptedRape of a minor and physically assaulting her when she resisted]].

* NiceHat: Jack's trademark trilby.

* AntiHero: Jack, [[Analysis/AntiHero Pragmatic Anti-Hero]].

* OvertookTheSeries

* NeverLiveItDown: In an unusual in universe example, Frost tends to get depressed whenever people refer to him winning the George Cross, feeling that he doesn't really deserve it.

* NoOneIsIndispensable: Subverted once when, after saying it, Mullet is forced to admit that yes, for the moment at least, Jack ''is'' indispensable.
** On the other hand when Frost starts catching flak for letting go a child abuser who's later blamed for a murder, a friendly journalist points out that if the publicity is bad enough anyone ''is'' expendable, even decorated heroes, so Frost had better get off his backside and find the real killer (he does).

* BeCarefulWhatYouWishFor: A decidedly NOT PlayedForLaughs example in "No Other Love". Mullett see's an opportunity to finally get rid of Frost and repeatedly tries to sideline him the entire episode in order to make Jack resign. But then [[spoiler: Frosts' partner Barnard is killed by the deranged Charlie Lawson and Frost, in a fit of shell shocked guilt, hands in his resignation. Mullett can only stare at Frost in horror when he gives in his notice, and his face screams MyGodWhatHaveIDone]]