Or maybe it was the surprising number of pop culture references from the entire crew.
Or maybe it was even Curtis Holts smooth transition into a Cisco Ramon-esque team member.
And a littleDie Hardthrown in for good measure didnt hurt either.

Credit: Dean Buscher/The CW
Brie has a tumor on her spine, and she needs a way to repair the life-threatening disease.
Luckily, one Felicity Smoak happens to have a miraculous biochip in her back.
Unluckily, its the only one of its kind still out there.
(Shades of scarlet red here, of course, as S.T.A.R.
Labs might as well have an open-door policy to any and all metahumans.)
And its quite the lair hes walking into.
agent as depicted in certain comics and previous cartoon series).
In the ensuing ordeal, Oliver is stung by one of the bees and undergoes severe pain.
Thats because, as Curtis notes once they bring Ollie back to base, he hasnt just been stung.
The bee has made its way inside his body and is multiplying rapidly.
For those who dont watch…its a bit of a long story.)
And Laurel plays it straight with him.
Unfortunately, theres no proper exit, only a concrete wall.
Unfortunately, theres plenty of darkness, and Darhkness, to still fight in the world.
Damien Darhk is still behind bars, where hes told by Malcolm Merlyn that H.I.V.E.
has decided to move on with Genesis without him.
But hes not taking his incarceration lightly.