Bad Assassin is all-new in 2026. You will need a copy of the Island Deck (or any six-suited deck of cards), plus a first-player token, a pawn for each spy (ideally matching the suits of the deck) and pencil and paper for each player. Here are some links:
Bad Assassin Board at DriveThruCards
Spyland Deck at DriveThruCards
Check out other games for the Island Deck
Learn more about Bad Assassin, and its older sister Before I Kill You Mister Spy…, at the Spy Games page.