This series starts where the last left off - obviously. Mitchell, George and Nina are looking for a house and with the full moon coming very soon they are forced to take an old B and B in Barry South Wales. (I spent a lot of time in Barry as a kid and if you are not familiar with the place - it really is a bit rough.) The wonderfully tacky decor they don't have time to change is superb.
Mitchell is on a mission to get Annie back from purgatory. This will involve trials and supernatural tribulations which will test him to his very limits. In the meantime George and Nina's relationship is developing, there's a teenage vampire who manages to combine being 43 with having the hormonal urges of a 14 year old boy, a South Walian vampiric infrastructure, a father and son werewolf team hunted by vampires determined to run "dog fights", Mitchell's brutal slaughter with Daisy from series two is the big news and the police are closing in and as we saw at the end of series two Herrick is back.
The series is dark - darker than the previous series which were pretty dark. Mitchell is a tortured soul even more than previously, having to live with what he's done, his growing relationship with Annie and protecting Nina and George. George and Nina are entering a new phase. But the story with Herrick is superb. He is back but is he really the same Herrick? Jason Watkins is brilliant and his interaction with Erin Richards as the detective Lucy is really chilling.
So it is often funny, gripping, dark, engaging and all the things that the first two series were. A fantastic follow on from series two and with a set up for series four.