Cosykiller is not your average book or board game, it´s not even your œrun of the mill � subscription box “ it is the exciting new monthly thrill you´ve been waiting for. Cosykiller is a storyline, which allows you to play detective every month and solve a great mysterious murder that is set in the golden age of fiction. It´s time to get into character, fasten those thinking caps and solve the most thrilling puzzle you´ve ever played. Each monthly Cosykiller box contains helpful clues, keepsakes, ciphers, mementoes and more that you will need to unravel the epic mystery. Will you solve the case before the final box? Explore a fun new challenge and put your detective skills to the true test with Cosykiller today.