SEASON PREMIERE: This Syfy series has a better plot, and certainly a more interesting look, than most of the network’s new shows. What started off as a sort of supernatural, Sapphic Batman and Robin has evolved into a complicated battle of good and evil, fairy world style, and handled that conceit better than, say, True Blood. Anna Silk stars as Bo, a succubus with ties to both the good and evil Fae worlds, but she’s not even in the Season 4 premiere. Instead, the heavy load is carried by her charismatic human sidekick, Kenzi, played by Ksenia Solo. Tonight, Kenzi comes to the aid of someone under a memory-altering spell –unaware that she, too, is under the same spell. And as part of the investigation, she takes to the dance floor, looking decidedly unlike her usual goth-girl self.