Transmedia is a technique of delivering a single piece of content in individual parts via different media and communication platforms (books, films, TV shows, games, live performances, etc.). In the book transmedia is considered as a case-in-point for the need to rethink library cataloguing and metadata practices in a new, heterogeneous information environment where the ability to bring together information from various sources into a meaningful whole becomes a critical information skill. Transmedia sheds new light on some of the long-existing questions of bibliographic information organisation (the definition of work, modelling of bibliographic relationships, subject analysis of fiction, etc.) and introduces libraries to new, transient and interactive media forms such as interactive fiction, gaming events, or performances. The book investigates how various theories and practices of bibliographic information organisation can be applied to transmedia, focusing on the solutions provided by the new bibliographic conceptual model IFLA LRM, as well as linked open data models and standards. It strongly advocates collaborative practices and reuse of knowledge that underpin an emerging vision of the library catalogue as a 'mediation tool' that assembles, links and integrates information across a variety of communication contexts.