“Fugue” is episode eight of season four of Sanctuary.
The episode opens with Will being thrown through a wooden door in the Sanctuary (and taking surprisingly little damage in the process). Stunners can be heard and, in the room Will was thrown from, a tall, humanoid Abnormal is taking stunner fire, with no effect, from Magnus and Declan.
Magnus wants to boost the stunners to full power, and Will pleads with the Abnormal not to do this. Magnus leaves the room to get a much larger stunner, which works. She says that she has never seen anything like this before, as the Abnormal transforms into Abby.
This is not the first time Abby has become a monster, but the third in 24 hours. Magnus has been trying, and failing, to stop her turning into the creature, with no success so far, and each time Abby transforms, she becomes angrier and crazier.
Henry is in town trying to find out what happened to Abby, accompanied by her partner, Gavin, first met in “Monsoon” (and who did not give a good impression). Henry is less than happy about this, and about Gavin’s constant apologies (Gavin’s mother was Canadian and, after all, Canadians are very polite). Gavin says they were following up on a report of a super-large gorilla in the area and he didn’t see what happened to Abby.
Back at the Sanctuary, Magnus says that the creature is overcoming all the DNA locks, and she wants to reduce Abby’s sedation and have Will talk to her when she comes around. Will is in the infirmary with Abby when Declan comes in and joins him. Declan puts on some music, at which point Abby wakes up. And starts singing instead of speaking. And can’t understand Will and Declan when they talk normally. Abby doesn’t remember what happened, or much of the past two days, only that she was in an alley.
According to Magnus, Abby can only understand singing now so, if they want to talk to her, they need to sing to her. Which Will doesn’t want to do. With both Abby, and the monster inside her, both communicating through song, as are the people they are ‘talking’ to, at some points this is rather more Sanctuary: The Rock Opera than Sanctuary. Especially when, for some reason, Magnus, Declan and the Sanctuary heads start doing a sort of musical number during a video conference. Magnus is also visited by the singing ghost of her father. This may well not appeal to everyone.
Henry and Gavin find a cocoon in the alley that Abby was in. It’s empty, and whatever creature was inside is now in Abby. The cocoon also appears to have been deliberately planted to infect a human.
Magnus is struggling to come up with a cure for Abby and, when she finally does, it’s one that’s more than a little risky.