Allegedly a re-working of Tolstoy's Anna Karenina, The Beautiful Lie has a great ambition. Some of the script, parts of the acting and occasional moments achieve something really worthwhile, but as a whole it isn't satisfying or believable.
More than that, none of the characters really engages us as viewers, so we may want to find out who ends up with whom, and why, but we don't get the sense that any of them are real.
The contrast with Tolstoy is vast: his moral and psychological vision was profound and engaging, whereas The Beautiful Lie takes us into a world of mostly trivia and lust, disguised as love.
I suspect this was a 6-part series that got extended. That makes it even less likely to retain our attention.