You will Watch Scooby Doo! Mystery Incorporated 112 online for free episodes with HQ / high quality. Stream cartoons Scooby Doo! Mystery Incorporated Episode 12 The Shrieking Madness. Following the break-up of Mystery Inc., the gang decides to move on with their lives by taking a weekend to check out a nearby university, but they are forced to delay their plans when the campus is terrorized by a mysterious creature known as Char Gar Gothakon, whose screams can destroy anything in its path. After catching Char Gar Gothakon, the gang reunites only to find that Mr. E has left them a box belonging to the Darrow family, along with a note which reads that the old Mystery Inc. might never have disappeared if they had this box in their possession. Upon opening the box, its contents are revealed to be an entire history of Crystal Cove. Velma states that it seems that one mystery has now become two.