I have to agree with most of the low ratings given this series so won't go into detail regarding the plot which had enough holes to drive a truck through, etc.
I watched it largely to see the lovely Joanne Froggatt, who was a delight in Downton Abbey. Hope to catch a future performance of hers in a better
series.
Lastly I absolutely could not believe it when the plot of Hitchcock's Two Men on a Train was lifted. Shame on them.
This should have been a two part movie made for television
IMO.