'The Blacklist' season 3 spoilers: Red meets someone from his past, will justice for Liz's death finally be served?

"The Blacklist" season 3 is only one episode away from its much-awaited finale which airs next week, and there are speculations that a major character will pay the ultimate price.
As the show draws near to the finale, the last two episodes will surely keep the viewers on the edge of their seats. Raymond "Red" Reddington (James Spader) already know who is responsible for Elizabeth Keen's (Megan Boone) abduction, and he will do everything he can to hunt him down and kill him. Susan Hargrave (Famke Janssen) confessed to Red that a man named Alexander Kirk (Ulrich Thomsen) hired her, who also happens to be his nemesis.
What is Alexander's part in red's life and how did they become enemies? As of now, all fans can do is speculate. The only thing that is sure right now is that Alexander will make his first appearance on the show this coming May 12, Thursday and his first meeting with Red after a long time is something that viewers should look forward to.
In this week's episode titled "Alexander Kirk," Red will meet his greatest enemy which will test how far he can go to bring justice to Liz's death. Red will not give up easily, making it difficult for his enemies to take him down. Reports say that Tom (Ryan Eggold) and Mr. Solomon (Edi Gathegi) will also be in the upcoming episode to uncover answers to some of the mysteries that needs to be resolved. The official synopsis for episode 21 reads:
"The FBI task force's hunt for revenge nears its endgame. As Reddington (James Spader) and the team close in on the mysterious arch-criminal responsible for recent tragic events, they're forced to operate outside their comfort zone—and outside the law—in order to take down their enemy once and for all."
Keep tuning in for the last two episodes of "The Blacklist" season 3 which airs every Thursday at 9 p.m. EST on NBC.