Things are certainly heating up on Lost Girl—and I don’t just mean that surprise hook-up between Bo and Tamsin, although it does feel like this week’s biggest development. Rookie Blue’s Noam Jenkins made his first move as a resuscitated corpse, bringing the ominous words “beginning and end” to screens and teasing something cataclysmic in the offing.

Considering how long things between Bo and Tamsin have remained at the casually teasing phase, I was pretty stunned to see Tamsin finally make a bold move—and, admittedly, even more surprised to see Bo, after a moment’s hesitation, opt for the second of Tamsin’s gifts. Maybe it’s because their friendship has been so rocky, or maybe because I was sort of digging the banter-creating tension between them as they started working together, but I’m not entirely sure how I feel about these two launching into something that looks like more than a chi-swapping fling.

I guess that for all the hints and chemistry between the two, I’ve always assumed Lost Girl would head to some kind of resolution involving the Bo/Lauren/Dyson triangle—though maybe this move is suggesting the show is considering something a bit less predictable for our loving fae and her friends. Either way, it gave Bo someone to confide in, and I can’t think of anyone who would be more understanding about Bo’s need to separate herself from her father’s legacy than Tamsin.

And while I’m certain that whatever’s brewing with Lauren and Dyson’s elevator crash case is closely tied to Bo’s father—both did, after all, begin with a trip to Hell and one cryptically named candle—I’m guessing that final shot of Horatio, a.k.a. the recently-deceased Kevin Brown means solving the elevator crash might take priority over that rune-covered Jack-in-a-box present from daddy dearest.

It’s certainly more pressing for the fae world now that their signatures—and powers—have been taken from the safety of Trick’s lair and are now being used by Kevin, and, presumably, that mysterious blonde woman responsible for his death, to hunt for whatever fae they need to take out (or collect pieces from). With the oracles now blind to any other visions, there’s no one to warn Bo and the rest about what’s coming, or what it may want from the rest of the fae.

Except maybe Dyson’s new kid, Mark, if he somehow manages to get over being a ridiculous stereotype of a teenage brat in time. Right now it seems like he’s on his way to being recruited to the Dark side—a process Dyson should probably explain to him a bit more clearly, and soon. Because while the kid’s aware his new friend stole the book, he doesn’t seem to have any idea what that means, or why it’s important. And sure, he’s dreaming Bo’s dream of being unaligned, but right now I don’t think he’s savvy enough to pull that off. Especially since Vex seems to be the only friend he’s capable of making, and I wouldn’t be surprised to find out Vex is the one who orchestrated the whole hook up in the first place. Mark’s recklessness may have been cute enough for Bo last week, but it’s quickly turning into something dangerous. And if Dyson doesn’t step it up in the paternity department soon, there may be more problems than a few broken pint glasses.

And as fun as it was to watch Tamsin deal with Bo’s slow transformation into a kitten (note: a napkin is not a suitable cover for the sudden appearance of paws), or to at least watch Anna Silk take up residence in the soothing confines of a cardboard box, I’m still itching to make a bit more progress on what the hell (pun intended) is going on with, well, everything. Or at least see the team start to connect a couple of the dots and give us something a bit more substantial to speculate with.

Lost Girl airs Sundays at 9 p.m. ET on Showcase.

Of all the possible reveals I’ve been anticipating and speculating about for Lost Girl’s final season, Dyson turning out to be a long-lost baby daddy was not one of them. Although given Dyson’s possible turn from the Light side, maybe this is setting up some final saving grace for him after killing The Hunter (Aaron Poole, Strange Empire) in cold blood.

After the first handful of episodes were easily making this season out to be all about Bo and her search for her father, “When God Opens a Window” seemed to be taking advantage of the extra episode order by giving us an intriguing look into Dyson’s psyche, post-Season 4’s devastating loss. And judging by his grand speech to the unpleasantly returned Vex and his bloodstained face as he nursed a beer and some memories, things have gotten—dare I say—Dark in Dyson-land.

While it seemed like a pointed reminder to Trick to get him back for sticking Vex with Dyson, in hindsight the wolf’s comments about whom he’d sworn fealty to now have more weight. Was Dyson aware he was struggling with being the good guy when he made that oath, or has doing it finally given him the freedom to act on certain urges? Either way, it’s now apparent Dyson’s allegiance to the unaligned Fae in his life is going to be having an effect on him—especially since Bo clearly knew where the blood was from and didn’t confront him about it. And maybe that’s a good thing, looking at the generations of fighting between The Hunter and the Shifters. Moving away from binaries, traditions and old grudges could make for a much healthier Fae world.

Though I’d feel much better if this ended up being Dyson’s only major transgression—mildly justifiable since The Hunter wasn’t all that good himself. As refreshing as it is to see Dyson take a break from his constant do-gooder ways, now might not be the best time for him to totally descend into evil even if it could make for some interesting relations between Dyson, Bo and her father. Of course, if Mark does end up hanging around, there’s always his own path to redemption by hopefully helping Dyson instead of simply living up to the retelling of Vex’s paternal relationship with Massimo. Forgiveness is all well and good from parents, but as we’ve already learned multiple times this episode between Vex and The Hunter, there are serious consequences to those kinds of actions, however much daddy may love you.

Then again, given Bo’s particular allure for Dyson’s son and the awkwardness it immediately brought on, maybe it’s best if Mark takes off for a bit. In between Tamsin edging in eagerly to help Bo heal, her no strings arrangement with Dyson and the lingering tension with Lauren, I’d say Bo’s got her hands awfully full even if she is a succubus. And after that whole stepmom debacle, I don’t now how much more keeping it in the family I’m interested in seeing.

Besides, as much as shipping has become a fun part of the show, at this point I’m far more excited to find out who our elevator lady is, what that lighting she apparently commands is, and especially what another triskelion is doing on a supernatural show (having been a go-to design for Teen Wolf since the beginning). While the symbol Dyson put together apparently fits a more Celtic look, I’m still anticipating the connection of Persephone and Artemis via the candle to mean we’re headed for a much more Grecian revelation. And if that’s the case, I think it rules out Walsh as Demeter, if her behaviour hasn’t already. Though we may have at least some part of the mystery in our hands now after Evony dropped off a very, very old evil at Lauren’s lab—wasn’t that what we were looking for last week?

Lost Girl airs Sundays at 9 p.m. ET on Showcase.