Collection: Best Selling Fiction Mail Series & Bundles

40 weeks of fiction letters for fans of mysteries and thrillers, told through 6 different series.

👉 Save 15% compared to buying each series separately!

The Cipher's letters arrive with four puzzles per letter, a dry sense of humor, and zero sympathy for wrong answers!

Perfect for word and number puzzle fans who want something to look forward to in the mailbox each week.