Meitantei Conan: Internet Nazo no Mail Jiken

An educational Meitantei Conan OVA where the Shounen Tantei-dan (Detective Boys/The Junior Detective League) have to do a school research project in the library when they receive a mysterious email that leads them on an educational scavenger hunt. This OVA was released as a bundle with Shogakukan's Nijuuisseiki Kodomo Hyakka Kagaku-kan Dai 2-ban (WOW!) (21st Century Children's Encyclopedia Science Museum 2nd Edition (WOW!)). It uses animated characters on top of live-action backgrounds.