If You like this Drama, you will like Stranger(1&2) too.
try this, it worth of your time.
Smart Male Lead
Calm Male Lead
Strong Female Lead
Police Officer
Thriller, Mystery, Crime, Investigation

If You like this Drama, you will like Hello Monster too.
try this, it worth of your time.
Smart Male Lead
Calm Male Lead
Strong Female Lead
Police Officer
Thriller, Mystery, Crime, Investigation