I'm always reading something, usually multiple books at a time.
"Where There's Smoke" is a short story, and Larger Than Life is a novella. These two short pieces are mini-prequels to Leaving Time. The first features psychic Serenity Jones, while the second is narrated by Alice, the elephant researcher whose disappearance in Leaving Time forms that book's central mystery.
This was a quick, four-hour listen, and was a bit like accessing DVD extras, filling in some background information on the characters in question. The stories are not essential for readers of Leaving Time--I'm glad I read the novel first, but I don't think that reading in the opposite order would hurt anyone's enjoyment of either work.