Watching the 2nd season of "Will Trent", that's a damn good detective/cop show. Well-written, well-acted. It's one of those quirky genius detective characters but he's more believable than some others in previous shows.
It finished some months ago but "The Lazarus Project" is a great sci-fi series. It's from England, reshown here. It's not a time travel series but a time reset series, if that makes sense. I can't wait for the 2nd season to show up.
"Justified" is an older series but they recently added a mini-series extension to it so I can recommend that show. It's the best-written TV series I've ever seen, Elmore Leonard was writing the story and handing off the pages to the show writers who converted that to episodes. Unfortunately he died which killed the series. But this new short season is based off of one of his other books that had a different main character, they just converted him to Raylan Givens. Timothy Oliphant is a fantastic actor.
If you've never seen it, "Person Of Interest" is an amazing slow-build up sci-fi TV series. It starts off looking like a normal procedural crime drama (I think in order to dupe CBS into leaving them alone) but there's an A.I. component to the story that gets bigger as the seasons progress. It's the best take on an emergent true A.I. (not the fake expert systems people are worried about now) that I've ever seen. Great acting, great writing. J.J. Abrams and Jonathan Nolan, the same team that later made "Westworld" which is also amazing and sort of the spiritual sequel to "Person Of Interest". Actually, Abrams' other show "Almost Human" could be slotted inbetween those two series in terms of similar subject matter but it unfortunately only lasted one season. Karl Urban was solid in it, as was Michael Ealy. Minka Kelly was great to look at as well as being a good actress, too.
Older series (2010) but if you liked the movie "Three Days Of The Condor" and wished there was a TV show that went down that same shadow government road, "Rubicon" is your show. It is a little scary how well they set up the big government/billionaire conspiracy in the show, I was truly pissed when it got cancelled after only one season.
"Counterpart" is a fantastic alternate universe sci-fi show starring J.K. Simmons in dual roles (most of the actors play 2 versions of themselves). Not only is it great science fiction but it also had a subplot about a terrorist pandemic being released yet the show got cancelled right around when COVID first hit, you would think that Starz would have had enough brains to capitalize on such a real world event! Idiots. Amazing acting, you actually like both versions of most of the characters. Still, two seasons of great sci-fi and mystery.
If you ever wished for a realistic take on mutants (unlike the X-Men and their fantastical-level superpowers) then "The Rook" is a great TV show. Another British show, there are a few special people who have mutant powers but they're "small", meaning increased strength or mind-reading or whatever, not being able to lift steel bridges or create tornadoes. Another one season only cancellation but it was great, though fans of the book didn't like that the magic aspects were deleted. I am glad that they didn't go down that road but I never read the book.
If you can find it (I bought the DVD set), "The Good Guys" is the best comedy cop show I've ever seen. Bradley Whitford is perfect as the older veteran cop stuck in the '70s mindset who isn't in the mood for his new, by the book smart younger partner (or using "computer machines" for that matter, hahaaha). They are relegated to solving minor bullshit crimes but usually stumble onto something much bigger. He also winds up driving a Trans Am and they try to include various rock songs when he's behind the wheel. One season (again!), criminally underrated.
"Backstrum" is almost as funny as "The Good Guys", more cynical in the humor. Stars Rainn Wilson from the U.S. version of "The Office" as an insensitive offensive detective who is really good at solving crimes. Lasted, sigh, one fucking season.
For fans of the Bourne movies, "Treadstone" was a really good TV series set in the same universe with new agents going further down that Blackbriar augmented spies idea. Really cool exotic locations, good acting. Yes, of course, cancelled after, wait for it, one season. Goddammit, is it me? Is there some conspiracy that kills off shows that I really like?!?
Maybe so. "Stumptown" is a really good private investigator series starring Cobie Smulders (from "How I Met Your Mother") that is sort of like the chick version of "Justified", similar writing and acting. One goddamn season, it was greenlit for a 2nd season but, hey, that guy really likes the show, kill it.
Hold on, this show managed to live through 2 seasons. "SIX", the best of the handful of SpecOps TV shows that came out some years ago, very realistic-looking, great acting, the action sequences were movie-worthy. About a Seal team both on mission and also their family life inbetween ops. If you wish the movie "Act Of Valor" had some actual acting in it, this is the show for you.
Back on track, another one season show, "Hunted" (from 2012), which stars Melissa George as a spy who is almost killed, she suspects by her employer. So she tries to figure out who/why while also working her next mission.