A new, fresh take on the same old Jekyll/ Hyde theme which has so captured fans of literature and all other kinds of popular culture since its inception in the C19th.
Stephen Moffat is known well as the writer on Doctor Who (soon to replace Russell T. Davies) and as such one can see how he can make material like this work so well. The main theme of good vs evil - captured with genius by Stevenson in the original story as the dichotomy in one individual man - is a great, meaty topic to dig into and Moffat certainly does. There are brilliantly written moments of drama, comedy and sheer horror, all well constructed and the plotting is perfect. The way the series is shot too is quite stylish, capturing the darkness of Hyde, and accentuating the pacy tension-building story.
However, despite a great start, this series does not end quite as well as it begins. It turns from a tense, stomach churning thriller into a 'Run!' style action/horror story. That said, it does not detract from a brilliantly written and acted, fresh drama.
Perhaps the best thing about it is James Nesbitt in the dual role of Jackman and Hyde. He both perfectly captures the exasperated, desperate family man of Jackman and relishes the delectable evil of Hyde. This performance not only holds the whole story together, but brings it into spectacular Technicolour.
If you want to watch an exciting, well-written, and well-made drama, with a punchy script, fast pace and great performances, then this is for you.