"Riverdale"
Just as one shooting got solved, another was presented, as a mysterious assailant held up Pop's diner and shot Archie's dad -- with Jughead's ominous voice-over telling us this was no random robbery gone wrong.

"Westworld"
Samurai World? Samurai World! Also, we're not sure who's really dead. 

"Stranger Things"
Mike touched his bathroom mirror and his world -- and ours -- transformed back into the Upside Down again. What does it mean?

"Outlander"
Jamie and Claire were separated, seemingly for good, but in the Season 2 finale, she got word that he actually survived the Battle of Culloden, which means she could travel back in time again for a reunion.

"The Flash"
Central City was left without its hero as the Speed Force needed a prisoner and Barry stepped up to sacrifice himself.

"Crazy Ex-Girlfriend"
Just as it seemed Rebecca would finally get her happy ending with Josh, he freaked out and left her at the altar. Season 3 should be even more awkward than usual.

"The Good Place"
It was the twist that blew fans' minds - were Eleanor and company in The Bad Place all along?

"The 100"
The post-apocalyptic drama set up its biggest time jump yet -- 6 years -- and left Clarke facing off against a new unknown threat in the form of a prisoner-transport ship from space.

"Timeless"
Good thing this got uncancelled, because the time-travel drama dropped two big twists as mysterious, villainous organization Rittenhouse took control of the time machine.

"Once Upon a Time"
The fairy tale drama offered closure to the majority of its current characters, and set up a planned reboot for Season 7, with a grown-up Henry getting a visit from a woman who claims to be his daughter. "Your family needs you," she said.