Heavily injured by big bad Damien Darhk, Felicity Smoak's life is set to end, leading Oliver Queen to avenge her in "Arrow" season 4 episode 10, according to recent spoilers.

Smoak's current story arc is the most crucial one in "Arrow" season 4 episode 10, among others, according to Enztarz. As per the publication, the character will potentially die in the hospital, where fans have seen her struggling for survival. In the midseason premiere for "Arrow" season 4, Darkh's forces gravely injured Smoak, leading to her hospitalization.

According to some rumors, Smoak was set to die and would become the mysterious person in the grave, whom Queen had vowed to avenge. In a teaser clip, Queen was seen shedding tears over someone's grave, which was believed to be Smoak.

Entitled "Blood Debts," "Arrow" season 4 episode 10 is set to see Queen as he deals with the destructive aftermath of Darhk's final attack, leading him as the Green Arrow to pursues his search for the big bad, as per the synopsis in Comic Book.

Smoak's possible death in the "Arrow" season 4 might have a reason, according to Movie Pilot. As the per the publication, Smoak's death would pave the way to her rise the Oracle.

In his Tumbler account, "Arrow" showrunner Marc Guggenheim hinted that Smoak could become Oracle, completing the Birds of Prey Team. He affirmed that Smoak's codename had a letter "A" in it and it would first appear in "Arrow" season 4 episode 11.

"Arrow" season 4 is set to return on Jan. 19 on The CW.