TV series
some had unresolved cliff-hangers
Mortal Kombat: Conquest -
Shao Khan's Shadow priests kill everybody
Blake's 7 -
Blake get's killed by Avon, the other heroes are shot leaving Avon surrounded...
and horror series ...
South of Hell -
the happy ending was a dream
Hex -
most of the protagonists get out alive but the bad guys are clearly the winners
"Does Magna Carta mean nothing to you? Did She die in vain?"