Echo is a crime drama, and it is another iQiyi light on series. It started with Song Jia and Wang Yang and had 13 episodes.

I finished it, and I have the following observations:
- The acting was good between the FL and ML; however, I did not like the plot.
- Half of the story was focused on the paranoia and broken relationship between Ran Dong Dong and Mu Da Fu characters. It was annoying to see that as a chief investigator of a police department, she had trust issues and was paranoid about her relationship with her husband.
- It was annoying and painful to watch both of them bickering about the same thing for 6 episodes which I don't think is relevant to the main story.
- It should focus more on crime scene investigation to solve the murder of the woman.
- I think the drama would be much better if it put the focus on crime and ended in 6-8 episodes.

As is, I did not like it very much and gave it a 6.0 rating because of the good acting between the lead actor/actress.