I know your Sunday nights are likely already full with Mad Men, Game of Thrones and the Good Wife, but that's what a DVR is for. Don't have a DVR, or didn't get it live streamed in time? That's what the library is for.
Here are a couple of very decent British mystery mini-series, including one airing on Sunday night, that might not be on your radar yet.
Currently on PBS is a beaut of a mystery called The Bletchley Circle. A three episode series, if you have missed the first two episodes shown, we have it on order and coming soon. Great period piece about four former WWII code breakers, trying to solve a string of murders. If you're a fan of Foyle's War you'll love this one. If you haven't seen Foyle yet, don't wait any longer—it's great.
Next up we have Exile, starring John Simm from the popular Life on Mars series and Jim Broadbent from everything else. Exile is a compelling story of a man who returns home after an eighteen year absence determined to unravel the mystery that drove him away in the first place. Another short watch at only 180 minutes.