Some of the most mind-bending episodes from sci-fi TV shows will leave you questioning reality, as seen in series like Dark, Black Mirror, and Lost.

There was some interesting story details from the original version of Avengers 5 with Kang that shows what could have been.

These sci-fi finales redefined how great stories should end. They're bold, emotional, and unforgettable to the very last ...

There's a plethora of iconic Marvel supervillains who have returned to the spotlight over the years, and these ten stand out ...