Forensics is a shared focus in both dramas. While "Trace" solely focuses on crime solving episode - to - episode, "I Know Your Secret" has a little bit of drama and added intrigue.
The male leads in both are quite similar, except for their jobs. Both have experienced a trauma in their pasts which have brought them to where they are now.
Both have the possibility of romance which isn't explored but hinted at.
Both have the possibility of romance which isn't explored but hinted at.
