Crime + Mystery, also known as Hexahedron Crime + Mystery is a Robloxian television channel owned by Hexahedron Television Networks. At the time of its launch, the channel was Hexahedron's first exclusive channel for the roTV platform, where several of the parent company's other channels (such as RMC) were already available. The channel initially launched on October 31, 2015.
In December 2016, DragonDipperBlossom, the owner of what was then Hexahedron Media Networks, left Roblox entirely, shutting down all his television operations. In March 2017, Dragon returned on the new account Overwxtched, and relaunched his television industry operations as Hexahedron Television Networks. Among the channels that were relaunched as a part of HTN, Crime + Mystery was announced to be one of the channels which would be relaunched.