spoilers

Betty plans to take down Brett in a quiz championship.

"Arrow" series finale wraps up Oliver Queen's story.

Bishop falls victim to the attack, too.

Katheryn Winnick makes directorial debut in "Valhalla Can Wait."

Katie LeClerc guest stars as a sergeant.

Bjorn returns home in "The Ice Maiden."

Bjorn deals with the aftermath of election results.

"Vikings" returns with the episode "The Key" featuring elections for the next King of Norway.

Elections for King of Norway take place.

Ziva David returns with a new problem.

"Supernatural" season 15 gets a delayed midseason premiere.

Lagertha takes the lead in the next chapter.

Cote De Pablo's Ziva David is back in "NCIS" season 17 episode 10.

Lagertha gets into action when crisis arises.

"Supernatural" season 15 fall finale features the trio's quest for new allies.

"Nancy Drew" winter finale sees the Drew crew's search for Ted.

Christmas dinner takes an unexpected turn in the fall finale.

"Riverdale" fall finale focuses on the search of Forsythe I.

"This Is Us" season 4 midseason premiere focuses on Rebecca's illness and Kate and Toby's marriage.

"The Flash" kicks off the third part of "Crisis."

Ziva returns for the final chapter of her story.

The Crisis continues in next episode of "Batwoman."

"The Walking Dead" season 10 midseason premiere picks up where it all ended in midseason finale.

Nell questions her future with Eric.

"Dynasty" season 3 returns with Blake Carrington's trial.

Supernatural remains preempted this week due to Thanksgiving?

"Arrow" season 8 midseason finale brings back an old friend and an enemy.

"The Flash" season 6 midseason finale features Team Flash's fight against Bloodwork's ruthless army.

Cote DePablo makes her final appearance in midseason finale and premiere.

"TWD" season 10 episode 8 introduces an important new character.