* FanPreferredCouple: Lynley and Havers, naturally. The fandom outliers are those who ''don't'' ship it! [[Creator/NathanielParker The star of the show himself]] declared outright that he wanted to see the show end with [[WhatCouldHaveBeen Lynley and Havers holding hands and walking into the sunset]].
* IKnewIt: Clever viewers may find themselves shouting this, especially since whodunnit is often not who you'd expect and therefore being right is all the more exciting.
* JerkassWoobie: Barbara in the pilot, "[[Recap/InspectorLynleyS00E01AGreatDeliverance A Great Deliverance]]". Viewers spend most of that episode both wanting to cuddle her because she's had such a crappy life and smack her for being bitchy -- at the same time. This does persist into the first series, but has largely been replaced with JerkassFacade (plus plain old {{Woobie}}) by mid-series 2.
* NarrowedItDownToTheGuyIRecognize:
** Idris Elba and James [=McAvoy=] were guest stars on the same episode, "[[Recap/InspectorLynleyS01E02PaymentInBlood Payment in Blood.]]"[[spoiler: {{Averted}} as neither one was the killer, and one became the third victim]].
** Creator/RichardArmitage played the role of Philip Turner in "[[Recap/InspectorLynleyS04E01InDivineProportion In Divine Proportion]]". [[spoiler: Again, {{averted}}, as he wasn't guilty of anything other than [[MrFanService fanservice]]]].
** Honeysuckle Weeks and James D'Arcy appeared as a married couple in "[[Recap/InspectorLynleyS06E02KnowThineEnemy Know Thine Enemy]]". [[spoiler: PlayedStraight, since they were the BigBadDuumvirate]].
* RelationshipWritingFumble: If the writers wanted viewers to believe Havers and Lynley aren't falling head-over-heels in love throughout the course of the show, they ''really'' shouldn't have had them call each other [[spoiler:their reason to get up in the morning]], or given them the infamous CryIntoChest at the end of "[[Recap/InspectorLynleyS04E01InDivineProportion In Divine Proportion]]" that looks like nothing so much as a man comforting his traumatized lover. Many, ''many'' fans have pointed out that Lynley has much better chemistry - and a much healthier relationship - with Barbara than he ever did with [[SatelliteLoveInterest Helen]].
* RetroactiveRecognition: ''Tons'' of current stars started out as minor characters on this show, including Henry Cavill (Superman in ''Film/ManOfSteel''), Richard Armitage (Thorin in ''Film/TheHobbit''), and James [=McAvoy=] (Professor X in ''Film/XMenFirstClass'').
* TheScrappy: Lesley Vickerage's Helen, who is by and large considered a whiny, selfish milquetoast. Catherine Russell's incarnation of the character is generally considered bland but likeable enough, but virtually everyone wants Emma Fielding (from the pilot) back.
* {{Woobie}}: Both the lead characters, in spades. When the storyline gets sick of torturing Lynley, it takes a break to snack on Barbara. And of course, because the two are [[TheNotLoveInterest so]] [[TrueCompanions close]], when one of them is hurting, the other is too. Luckily, the [[FriendshipMoment comfort and strength]] they find in each other helps make up for it a little bit, at least.