From Dennis Detwiller's Tumblr:
“A Victim of the Art” is a Delta Green scenario set in the fictional town of Glenridge, Long Island. The investigators play Delta Green agents and/or friendlies brought in to solve a series of grisly murders which have rocked the small, rich, seaside community.
The killer is not human – but the perpetrator is.
A PDF of the scenario is available at the Tumblr page.