Big Mouth is one of the best thriller kdramas I have ever seen. The cast is amazing and the acting is superb. Yoona and Lee Jong Suk both delivered the best performance and let's not forget the villains who made us really go around the circles trying to figure out who is the real Big Mouse is.

The plot of the story is unique and interesting which keeps the suspense alive until the very last episode . The chemistry between the lead couple is sweet and endearing. However I didn’t like the ending of the drama, it ended too hastily. For a series that evoked excitement throughout its run, this ending is a surprisingly gloomy and sad one.

The reason why I didn’t like the ending was because the ending felt rushed and there was no need for the female lead to die. Her death only serves the purpose of pushing Chang-ho’s character development. I personally think the couple should have gotten a happy ending because of all the hardship they went through together. The lead couple went through so much pain and misery so I think they deserved to have a happily ever after. In fact, we could have gotten the very same ending with Mi-ho alive, well and supporting Chang-ho in his endeavours to become a good Big Mouse.

In the end we got Chang-ho’s transformation into Big Mouse is complete and Do-ha gets his punishment. Also I was very surprised that Chang-ho processes his wife’s terminal illness quicker than I expected. Overall, a sluggish conclusion to a truly thrilling story that ended on a bleak and gloomy note.