||This needs a stretch.|
It's a Mystery! is the second and last story in Scooby-Doo! #155 by DC Comics.
Mystery Inc. has set up a fake mystery for Velma Dinkley to solve on her birthday. Little do they know she has gotten caught up in a real mystery instead -- with a real poisoner.
| Uncle Howard
|| Sally Gerber said he had poisoned her, and he was a brilliant chemist, who made the forementioned poison.
- Chuck's Chocolate Chateau
- Mrs. Gerber's mansion
- Uncle Howard's mansion
- General Chemical company
- City Library
- Burns & Norbel's Mega-Super-Bookstore