Cosykiller is an interactive murder mystery subscription box for the armchair sleuth

Plans as low as $36.67 / month
Product Overview
  • For UK - arrival 2-4 days. For USA: we ship in bulk on the 1st and 14th day of each month. USA boxes arrive within 7-10 days of that bulk shipment. All other territories items are shipped airmail as orders arrive: 14-21 days depending on destination. All boxes should reach their destination within 21 working days.
  • Ships worldwide from United Kingdom
  • Subscriptions automatically renew. Cancel anytime
Immerse yourself in the story and find the killer
Always fancied you could crack a cold case? Now you can find out with a Cosykiller subscription box. Each storyline lasts a year. The box is delivered directly to your door and packed with vintage memorabilia, keepsakes and intrigue. There are puzzles, ciphers, suspects, back stories and false leads. It's difficult and requires tenacity.
  • Work on your own or in a small "detective team" as the boxes arrive
  • Work at your own pace, or ask for hints from the private facebook group
  • Features vintage memorabilia, coherant storylines, replica items, keepsakes
  • Solve a murder from the comfort of your own armchair!
  • Each letter accompanying the box is personalized to the customer - which makes it a great gift item.


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