Hiyori was arrested for suspicion of being the perpetrator of the recent attacks. Haruka read her mind and found out that Hiyori was innocent. The other members of the ESP Research Club tried to make a case (with the police) for Hiyori's innocence. She was letter released when another case occurred. Despite this, Haruka decided to track down the real criminal. Yoshihisa refused, but Yuriko supported the idea as a way to pay back the police for using her mother's psychic powers and then abandoning her.
Episode 10 of Kotoura-san was quite good actually. We saw again the manipulative and sinister side of Yuriko, but her heart seems to be in the right place this time. I liked that Yoshihisa pointed to Haruka her attitude to put on her shoulders all the bad things that happen to the people around her. The rest of the episode was pretty straight forward. This episode gets a 9 out of 10.