For anyone who is not aware of this 'cult' TV show here is what the Wiki has to say about it:-

Lost Girl is a Canadian supernatural crime drama television series that premiered on Showcase on September 12, 2010. The series was created by Michelle Lovretta, and is produced by Prodigy Pictures, in association with Shaw Media . It follows the life of a succubus named Bo , played by Anna Silk , as she learns to control her abilities, helps those in need, and discovers the truth about her origins. Following good ratings and positive reviews, it was renewed for its second season two months after its premiere, ^{[ 4 ]} and for its third season in December 2011. ^{[ 5 ]}

In Australia, Lost Girl premiered on Sci Fi Australia on July 14, 2011. ^{[ 6 ]} In the United Kingdom, it premiered on Syfy (United Kingdom) on September 1, 2011. ^{[ 7 ]} In the United States, it premiered on Syfy on January 16, 2012. ^{[ 3 ] [ 8 ]}

And the Welsh connection? The actor ( Paul Amos ) who plays the none too charming 'Vex' is from Pencoed near Bridgend. Here is what wiki has to say about him:-

Paul Amos as Vex: A Mesmer. He can control people's actions against their will. Vex is of the dark Fae and "friends" with the Morrgan. He played a pivotal role against the Garuda where he used his powers to delay the Garuda in using Trick's blood to change the Blood Laws. He has a childish personality and uses his powers to amuse himself in such ways.

If you haven't caught up with the show yet you can find 35 episodes on Netflix but be aware that for all its frivolity it is very much an adult themed series. If you thrilled to 'True Blood' you will love 'Lost Girl' and it is after all:- "the highest-rated Canadian scripted series premiere of all time on Showcase".

Here is Paul Amos' IMDB entry : - Paul Amos on IMDB