In "Bluebird House" Lee Joon Hyuk started to get suspicious about his father, Kim Jung Hak's, sudden death decades ago.

On the 40th episode of KBS2 weekend drama "Bluebird House" broadcast on July 5th, Kim Ji Wan (played by Lee Joon Hyuk) made a huge declaration on Jang Tae Soo (played by Chun Ho Jin).

On this day, Kim Ji Wan looked into the financial transactions of Tae Hoo industries and was in absolute shock. The days that Tae Soo had taken the money out of alternate bank accounts into his own account was the very day that Ji Wan's father Kim Sang Joon (played by Kim Jung Hak) had died.

Afterwards, Kim Ji Wan said, "The day that you had taken all this money out was January 12th. Why this date? Could it be that my dad knew everything that had been going on? And because of that, did you make him die?" Jang Tae Soo said, "You're father was already dead when I was there. He knew nothing when he had died."

In addition, Jang Hyun Do (played by Lee Sang Yeop) said, "I'm not going to make excuses for my father. But my father is not someone that's going to make his friend die. So please believe him."