First half:
A slowly unravelling mystery around a rich art dealers death seen through his widows eyes. Very enticing plot development and pace, great settings, outfits, direction, editing etc.
Second half:
A bit of a mess that never recovers. Im not sure if all the episodes where written by the same people and didn't bother to check. But the second half of the series was seriously lacking in all above mentioned areas, except setting and outfits which didn't change. Not much made sense, and the quality of the whole show plummeted to a cable channel daytime soap opera level.
Watch it if you have nothing to kill some time with, or leave it on in the background while you make use of your time otherwise. Don't expect any brilliant twists or a great ending.