The Abbey Grange

Sir Eustace Brackenstall has been murdered, and Holmes and Watson rush to the crime scene. But all is not as it seems. A bell-pull, some empty glasses of port, and a "multiplex" tool (who knew they had Swiss army knives back in the day) with a corkscrew in it prove to be the deciding factors in what would be a locked room mystery...were it not for the open window.