I came to a realization in the last couple of years that I'm really into crime fiction, particularly mysteries, and it's not a new thing for me. I have memories of reading some poirot in my early teens and a series called the Three Investigators which I guess is like the Hardy Boys or Nancy Drew but not as well known(?). Rarely see anyone mention it. For the longest time I thought scifi and fantasy was the only thing I was into. I must have blotted those early books from memory for whatever reason. I've been correcting it recently but it doesn't help the TBR pile especially with so many mystery series being multiple books long.
Of the series mentioned here I can wholeheartedly recommend the Gamache series by Louise Penny and the Falco series by Lindsey Davis. I'm multiple books into both series and they are up there with other favourite series in fiction like the Vorkosigan saga. Esteemed company. Gamache is fantastic. Really atmospheric and evocative with some fantastic characters. It's this mix of cosy atmosphere with obviously much darker undertones. I want to live in Three Pines and I want to be friends with Gamache and co. Likewise the Falco series does for ancient Rome what the Gamache series does for Montreal and its surrounding areas. Really good at transporting you to a different time and place.
I have also read the first book in the Cadfael series and thought that was a strong opening book in the series. I intend to get back to it someday. A recurring problem following all these different series
People were looking for something set in Australia and Peter Temple's books fit the bill. I have only read the first book in his Jack Irish series but that was enough to convince me to get the rest of them. He's an acclaimed writer but not as well known as some think he should be. Sadly passed away in 2018.