Saw this by chance and will record.
I remember getting really confused by series 1 where a detective searches for a missing child and also deals with the loss of his own daughter.
I wonder if this series will also have them working across a number of european countries.
Looks like Charlotte Rampling is still in it and from memory she was based in France.
Seems like all episodes are available on line https://www.bbc.co.uk/programmes/m000nwrb