Quoted By:
Seowon staged her own kidnapping to escape her dad that killed her half brother that they've been trying to keep a secret to prevent a scandal coming out that would ruin their family. But her cousin is in love with the mom so she tried to kill the dad which inadvertently made it look like she was a prime suspect since she was acting suspicious. But in the end, the grandma came back to life and did it.
But that's just my theory
