The Deposition of Queen Dowager

After Ha Seon finds out about Lord Yoo’s death, he and Lee Kyu make the Queen Dowager confess her crimes in order to depose her. In the process, Ha Seon speaks with Shin Chi Soo and hears that Lee Kyu killed Heon. Will Ha Seon become suspicious of Lee Kyu and side with Shin Chi Soo?