There's a series on PBS called Baptiste, currently in second and final season, season 2.
It's Mystery theater.
It's I believe a British production. The main character is an obsessive former French police detective who specializes in missing children. This season takes place in Budapest, season 1 in Amsterdam.
Anyways being on PBS, they beep out cussing, though the European version probably has cussing.
The character originally debuted on a series called The Missing, which was originally on Starz I believe.
Again, missing children cases and it can be tough to watch but no graphic violence.
Obviously shows a lot of the emotional strain the missing children puts on families.
I don't know how PBS Passport works but I assume you can watch both seasons of Baptiste, any time you want. The finale of season 2 is this Sunday.
The 2 seasons of The Missing are included with Amazon Prime video.
Probably would want to start with The Missing just to have an idea about Baptiste the character but I think just watching the two seasons of Baptiste would be okay too.
Looks like both seasons of The Missing and Baptiste are available on DVD and Blu Ray if you don't subscribe to the streaming services.
https://www.amazon.com/Missing-Blu-ray-James-Nesbitt/dp/B00QMKHM3A