- Drama: Secret Door
- Country: Hong Kong
- Episodes: 25
- Aired: May 29, 2023 - Jun 30, 2023
- Aired On: Monday, Tuesday, Wednesday, Thursday, Friday
- Original Network: TVB Jade , Youku
- Duration: 45 min.
- Content Rating: Not Yet Rated
Zhong Zi Kiu and Cheung Sam Yue are childhood friends who have taken very different paths because of crimes committed by each other's fathers. After her father was imprisoned, Yue changed her name and surname, hoping to have a new life. Even if she got married and had a daughter, she never mentioned her past, vowing to not repeat the mistakes of the previous generation, and chooses to be an insurance investigator as a career. The two hadn't seen each other for a long time, but they met again because of a 10 million life insurance. Yue's husband Yin Hao Ran died unexpectedly, but the insurance amount was increased a few months before his death, and knowing Yue's life before the accident happened, Kiu suspected that all of this, it's not coincidence. But what is the truth?
