Three Hands Mail Club

Three Hands Mail Club's first story, Peregrine's Tea Shop, follows Maran Smith after she buys a tea shop in a Washington seaside town and customers start falling ill. Each month brings the next chapter as a letter of at least two double-sided pages, along with a postcard, stickers and an item taken from the story, such as artwork, bookmarks or recipes. The pieces are hand painted and some hide clues. Over 12 months the story adds up to a novella.

It costs $10 a month. Letters are mailed on the 1st and usually reach US readers in two to five days; international shipping is available at checkout.

For mystery readers who enjoy supernatural twists and interactive clues.