Book Riot s Mystery Deals of the Day for October 25 2021 - 17Book Riot s Mystery Deals of the Day for October 25 2021 - 87Book Riot s Mystery Deals of the Day for October 25 2021 - 63Book Riot s Mystery Deals of the Day for October 25 2021 - 87Book Riot s Mystery Deals of the Day for October 25 2021 - 85