Inspector Shin's Clues: The Chimera Club

Note: Found in a crumpled envelope under the seat of a cab, addressed to a Dr. Morrison. The envelope contains a green calling card with the words “Chimera Club” typed across the center and a short note. The note is written in a shaky hand, and reads:

Samuelson is dead.
Watch your back, they will be after you next. Meet me in the Chimera Club Green Room tonight at 9 sharp. Bring the Hand, and for God’s sake be careful. May God have mercy on our souls.

~Donnelly