Miss Truth (2020)

Both dramas have a forensic science element to them, as well as a strong FL who is into that stuff.....................................

-Love triangle
-FL forced into marriage with ML
-FL loves the 2nd male lead who although loves her but doesn't sacrifice as much for her as the ML
-FL and ML don't get on at all and wishes to run -away with the second male lead initially
-Both 2nd male leads have other identities making it difficult for him to put the FL above all else unlike the ML in both dramas

Both about solving mysteries and helping the state
Both FL and ML involved in solving mysteries
Both FL and ML don't get on initially

Very similar story, but the plot of MCIAL is much simpler and more realistic than Miss Truth. Both series are watchable and good though.