From IMDB:

When her husband, Lee, is murdered, Sarah Manning comes to realize that she knows nothing about his past. Sarah begins to question who Lee actually was and what he did in his work for a powerful global organization. And why did Lee, a salesman, need to carry a gun?

From Acorn TV you can stream 6 episodes of this international conspiracy mystery based in Dublin. Each episode is about 50 minutes.

Sarah Manning (played by Elaine Cassidy) is the mourning but puzzled widow. Detective Sergeant Emer Byrne (played by Angeline Ball) is the  member of the Irish Guard (i.e. police) who despite the obstacles placed before her by her formerly honest Chief Superintendent James Nulty (played by Lorcan Cranitch)  is determined to pursue the murder case. Sarah is surrounded by relatives, police officers, and pharmaceutical employees all of whom have something to hide.  Hans Werner Hoffman (played by Morten Suurballe) presents one of the coldest sociopaths I have seen in a drama.

Such a binge-worthy plot is well worth your time.