I thought I knew my classical music well until I heard this piece in the 2018 BBC/AMAZON PRIME VIDEO production of Agatha Christie's The ABC Murders with John Malkovich as Poirot. It is a cello and piano piece, possibly a Sonata, definitely in the romantic/neo romantic style. It was played in the very last scene of the drama (3rd episode @53:41). I have tried everything to get the soundtrack list for the whole drama: sent emails to the BBC Productions, Agatha Christie Productions, tweeted the composer of the original soundtrack music (a lady by the name of Isobel Waller-Bridge) and asked for help from our national classical music station in Australia (@abc.classic), but no one bothered to answer!
Please, can you help?
I uploaded to YT the segment where the music is played, https://youtu.be/C-m7Fk6mEfU but it reveals the ending of the whole series so if you have not watched it ....
Thanks a lot