Is it Glee? No. Is it American Idol? No. It is Sanctuary: The Musical!
Sanctuary, a Syfy channel series, follows Helen Magnus and her team as they track and try to protect Abnormals, things not human or animal.
The show opens with Helen, Will, and Declan as they try to subdue an abnormal. Having no luck with normal stun guns, Helen goes for the Big Gun. The abnormal is stunned unconscious and turns into Abby Corrigan, FBI agent and Will’s girlfriend.