In last Monday's episode, a crazed Finn figured out Klaus has been keeping a secret so huge that he would kill his own biological father over it. Will he discover Hope's whereabouts with the help of some one from the past? Read on for more "The Originals" season 2 episode 13 spoilers!

According to the episode summary from International Business Times, Finn will meet "a powerful figure from his past."

As shown in the previous episode, the Mikaelson's eldest sister, Freya, finally made herself known to Rebekah. She also broke themselves out of that crazy bin for wayward witches.

Their supposed kidnapped sister also promised to visit her feuding brothers soon. What is unsure, however, is which sibling she'll visit first and help out.

With such great powers at her disposal, will she be the one to help Finn get rid of their siblings' vampirism? Although from what Finn had been doing lately, he seems to be more into wanting them all killed than healed.

Question is, does Freya share the same sentiment as Finn? Perhaps she will sympathize with Klaus and protect Hope instead.

As for other "The Originals" season 2 episode 13 spoilers, it looks like Klaus will have to tone down his paranoia for the sake of his daughter.

"As the threat to Hope's life grows stronger, Klaus (Joseph Morgan) realizes he has no choice but to place his trust in his siblings to ensure she remains protected," the synopsis said.

On the other hand, Marcel's loyalty to the Mikaelsons will be put to the test with Finn's sinister order.

Finn will be hunting down Hayley for her blood and he'll be making Marcel do it for him. This might just put a stop to the unification ritual that Hayley and Jackson are trying to do.

Meanwhile, Kol has been cursed by his enraged brother to stay in his current body or permanently die. Will he be the Mikaelson sibling set to die as mentioned in previous reports?

Watch next week's trailer below for some "The Originals" season 2 episode 13 spoilers!