When you find yourself trying to remember a show (or any works) that's on the tip of your tongue but just out of reach, come here - the collective brain of the TVTropes community can probably help. Post all the details you can remember (examples help). If you're looking for a trope, head over to Trope Finder. Have general questions about tropes? Visit Ask The Tropers!
That's it!! Thank you so much! I KNEW a regular person could help but I didn't think so quickly. That's definitely it. I just hadn't officially been aware of Stephen Graham yet at the time. In the last few years I've seen him in lots of series and movies. Still can't figure out which network I actually saw it on. I still have the cable package with all the prime channels and it's no longer available On Demand, and it's not on the streaming services I have either. But now that I know what it is I'll be able to get it somehow. I guess it was just an under-the-radar show or something. There's so much TV out there. You're awesome. Case officially closed.

I saw this on premium cable in 2019 in the US, but it takes place somewhere in England. The main character is a Black divorcee who is a former cop maybe, and he frequents a karaoke pub in his neighborhood. His daughter lives with her mother and step father and his large, wealthy family. He's important somehow, maybe government work. They live in a fancy area with a gate. The daughter goes missing after leaving a voicemail that she's visiting her father, and is last seen on video at a train station or on a train. So the father is suspected, and he goes looking for her on his own. The mother and their family go on TV to plead for information about the girl's whereabouts. Meanwhile, there's another character from the pub, a blonde guy, who has a secret laptop at his place that his wife doesn't know about which he uses to watch sick, dark web stuff of abducted kids trapped in rooms with live video feeds. The rooms are titled "fresh fruit", "bruised fruit", etc. Really awful. The main character wears a track suit a lot, he gets beat up late at night in a parking garage by a street gang, maybe robbed. He has a kind of casual relationship with a blonde single mother from the pub who lives in a nearby apt. complex. It shows how drinking kind of messes up his life, but he goes back into detective mode when the daughter goes missing. I only saw two or three episodes so I don't know much more except I didn't hallucinate it and have had NO luck with A.I. or exhaustive searching over the last several years. It was on cable TV like Showtime, Cinemax, Starz, HBO, etc..., and yet I've gone through seemingly every list and can't place it. It wasn't a BBC free to air show or anything, definitely an adult mature audiences kind of show. It was fairly recent then though, so I'd place it between 2014 and 2019. The owner of the karaoke pub was a maybe mid to late 40's woman with big, frizzy hair. I thought it was Alex Kingston but it wasn't. I didn't recognize any of the actors but they were all good in it. The main guy is suspected at first but I think he tries to solve it on his own, I think he tries to visit his ex wife's house. It's not 'The Missing', 'The Capture', 'The Five', 'The Tunnel', 'The Rook', 'The Last Train', 'The Fall', or 'Gangs of London'. Those are what these supposedly "amazing" A.I. tools have come up with. I know a real person out there has seen this and can help me though. So it could be a co-production somehow but I saw it on a movie channel in the US. It didn't seem like more than like a 6 to 8 part miniseries but I can't be sure. I think they probably figure something out through the blonde guy who watches the dark web stuff but I don't know if he's directly involved. It's SO STRANGE that there seems to be no trace of this show. I watched at least two installments of it and things got busy and I never wrote it down or anything because I figured I'd just see it again somewhere. And now I can't even find evidence that such a show existed. I appreciate any assistance. Thank you in advance.