"Unknowable" is a short story set in the Jokka's Shell universe. It is the sequel to Unspeakable. The e-book was independently published on July 20, 2011.
- In this sequel to Reader's Choice Award "Unspeakable," Tanel, Nashada and Ekkuli return in a new city, having made themselves a comfortable home... a comfortable home, until an invader arrives and threatens once again to rearrange all Tanel's notions of love.
"Unspeakable" is available for purchase as a stand-alone e-book, and is also included in the Jokka collection Clays Beneath the Skies.